text: /*!
   * FullCalendar v1.6.4
   * Docs & License: http://arshaw.com/fullcalendar/
   * (c) 2013 Adam Shaw
   */
  
  /*
   * Use fullcalendar.css for basic styling.
   * For event drag & drop, requires jQuery UI draggable.
   * For event resizing, requires jQuery UI resizable.
   */
   
  (function($, undefined) {
  
  
  ;;
  
  var defaults = {
  
  	// display
  	defaultView: 'month',
  	aspectRatio: 1.35,
  	header: {
  		left: 'title',
  		center: '',
  		right: 'today prev,next'
  	},
  	weekends: true,
  	weekNumbers: false,
  	weekNumberCalculation: 'iso',
  	weekNumberTitle: 'W',
  	
  	// editing
  	//editable: false,
  	//disableDragging: false,
  	//disableResizing: false,
  	
  	allDayDefault: true,
  	ignoreTimezone: true,
  	
  	// event ajax
  	lazyFetching: true,
  	startParam: 'start',
  	endParam: 'end',
  	
  	// time formats
  	titleFormat: {
  		month: 'MMMM yyyy',
  		week: "MMM d[ yyyy]{ '&#8212;'[ MMM] d yyyy}",
  		day: 'dddd, MMM d, yyyy'
  	},
  	columnFormat: {
  		month: 'ddd',
  		week: 'ddd M/d',
  		day: 'dddd M/d'
  	},
  	timeFormat: { // for event elements
  		'': 'h(:mm)t' // default
  	},
  	
  	// locale
  	isRTL: false,
  	firstDay: 0,
  	monthNames: ['January','February','March','April','May','June','July','August','September','October','November','December'],
  	monthNamesShort: ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'],
  	dayNames: ['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'],
  	dayNamesShort: ['Sun','Mon','Tue','Wed','Thu','Fri','Sat'],
  	buttonText: {
  		prev: "<span class='fc-text-arrow'>&lsaquo;</span>",
  		next: "<span class='fc-text-arrow'>&rsaquo;</span>",
  		prevYear: "<span class='fc-text-arrow'>&laquo;</span>",
  		nextYear: "<span class='fc-text-arrow'>&raquo;</span>",
  		today: 'today',
  		month: 'month',
  		week: 'week',
  		day: 'day'
  	},
  	
  	// jquery-ui theming
  	theme: false,
  	buttonIcons: {
  		prev: 'circle-triangle-w',
  		next: 'circle-triangle-e'
  	},
  	
  	//selectable: false,
  	unselectAuto: true,
  	
  	dropAccept: '*',
  	
  	handleWindowResize: true
  	
  };
  
  // right-to-left defaults
  var rtlDefaults = {
  	header: {
  		left: 'next,prev today',
  		center: '',
  		right: 'title'
  	},
  	buttonText: {
  		prev: "<span class='fc-text-arrow'>&rsaquo;</span>",
  		next: "<span class='fc-text-arrow'>&lsaquo;</span>",
  		prevYear: "<span class='fc-text-arrow'>&raquo;</span>",
  		nextYear: "<span class='fc-text-arrow'>&laquo;</span>"
  	},
  	buttonIcons: {
  		prev: 'circle-triangle-e',
  		next: 'circle-triangle-w'
  	}
  };
  
  
  
  ;;
  
  var fc = $.fullCalendar = { version: "1.6.4" };
  var fcViews = fc.views = {};
  
  
  $.fn.fullCalendar = function(options) {
  
  
  	// method calling
  	if (typeof options == 'string') {
  		var args = Array.prototype.slice.call(arguments, 1);
  		var res;
  		this.each(function() {
  			var calendar = $.data(this, 'fullCalendar');
  			if (calendar && $.isFunction(calendar[options])) {
  				var r = calendar[options].apply(calendar, args);
  				if (res === undefined) {
  					res = r;
  				}
  				if (options == 'destroy') {
  					$.removeData(this, 'fullCalendar');
  				}
  			}
  		});
  		if (res !== undefined) {
  			return res;
  		}
  		return this;
  	}
  
  	options = options || {};
  	
  	// would like to have this logic in EventManager, but needs to happen before options are recursively extended
  	var eventSources = options.eventSources || [];
  	delete options.eventSources;
  	if (options.events) {
  		eventSources.push(options.events);
  		delete options.events;
  	}
  	
  
  	options = $.extend(true, {},
  		defaults,
  		(options.isRTL || options.isRTL===undefined && defaults.isRTL) ? rtlDefaults : {},
  		options
  	);
  	
  	
  	this.each(function(i, _element) {
  		var element = $(_element);
  		var calendar = new Calendar(element, options, eventSources);
  		element.data('fullCalendar', calendar); // TODO: look into memory leak implications
  		calendar.render();
  	});
  	
  	
  	return this;
  	
  };
  
  
  // function for adding/overriding defaults
  function setDefaults(d) {
  	$.extend(true, defaults, d);
  }
  
  
  
  ;;
  
   
  function Calendar(element, options, eventSources) {
  	var t = this;
  	
  	
  	// exports
  	t.options = options;
  	t.render = render;
  	t.destroy = destroy;
  	t.refetchEvents = refetchEvents;
  	t.reportEvents = reportEvents;
  	t.reportEventChange = reportEventChange;
  	t.rerenderEvents = rerenderEvents;
  	t.changeView = changeView;
  	t.select = select;
  	t.unselect = unselect;
  	t.prev = prev;
  	t.next = next;
  	t.prevYear = prevYear;
  	t.nextYear = nextYear;
  	t.today = today;
  	t.gotoDate = gotoDate;
  	t.incrementDate = incrementDate;
  	t.formatDate = function(format, date) { return formatDate(format, date, options) };
  	t.formatDates = function(format, date1, date2) { return formatDates(format, date1, date2, options) };
  	t.getDate = getDate;
  	t.getView = getView;
  	t.option = option;
  	t.trigger = trigger;
  	
  	
  	// imports
  	EventManager.call(t, options, eventSources);
  	var isFetchNeeded = t.isFetchNeeded;
  	var fetchEvents = t.fetchEvents;
  	
  	
  	// locals
  	var _element = element[0];
  	var header;
  	var headerElement;
  	var content;
  	var tm; // for making theme classes
  	var currentView;
  	var elementOuterWidth;
  	var suggestedViewHeight;
  	var resizeUID = 0;
  	var ignoreWindowResize = 0;
  	var date = new Date();
  	var events = [];
  	var _dragElement;
  	
  	
  	
  	/* Main Rendering
  	-----------------------------------------------------------------------------*/
  	
  	
  	setYMD(date, options.year, options.month, options.date);
  	
  	
  	function render(inc) {
  		if (!content) {
  			initialRender();
  		}
  		else if (elementVisible()) {
  			// mainly for the public API
  			calcSize();
  			_renderView(inc);
  		}
  	}
  	
  	
  	function initialRender() {
  		tm = options.theme ? 'ui' : 'fc';
  		element.addClass('fc');
  		if (options.isRTL) {
  			element.addClass('fc-rtl');
  		}
  		else {
  			element.addClass('fc-ltr');
  		}
  		if (options.theme) {
  			element.addClass('ui-widget');
  		}
  
  		content = $("<div class='fc-content' style='position:relative'/>")
  			.prependTo(element);
  
  		header = new Header(t, options);
  		headerElement = header.render();
  		if (headerElement) {
  			element.prepend(headerElement);
  		}
  
  		changeView(options.defaultView);
  
  		if (options.handleWindowResize) {
  			$(window).resize(windowResize);
  		}
  
  		// needed for IE in a 0x0 iframe, b/c when it is resized, never triggers a windowResize
  		if (!bodyVisible()) {
  			lateRender();
  		}
  	}
  	
  	
  	// called when we know the calendar couldn't be rendered when it was initialized,
  	// but we think it's ready now
  	function lateRender() {
  		setTimeout(function() { // IE7 needs this so dimensions are calculated correctly
  			if (!currentView.start && bodyVisible()) { // !currentView.start makes sure this never happens more than once
  				renderView();
  			}
  		},0);
  	}
  	
  	
  	function destroy() {
  
  		if (currentView) {
  			trigger('viewDestroy', currentView, currentView, currentView.element);
  			currentView.triggerEventDestroy();
  		}
  
  		$(window).unbind('resize', windowResize);
  
  		header.destroy();
  		content.remove();
  		element.removeClass('fc fc-rtl ui-widget');
  	}
  	
  	
  	function elementVisible() {
  		return element.is(':visible');
  	}
  	
  	
  	function bodyVisible() {
  		return $('body').is(':visible');
  	}
  	
  	
  	
  	/* View Rendering
  	-----------------------------------------------------------------------------*/
  	
  
  	function changeView(newViewName) {
  		if (!currentView || newViewName != currentView.name) {
  			_changeView(newViewName);
  		}
  	}
  
  
  	function _changeView(newViewName) {
  		ignoreWindowResize++;
  
  		if (currentView) {
  			trigger('viewDestroy', currentView, currentView, currentView.element);
  			unselect();
  			currentView.triggerEventDestroy(); // trigger 'eventDestroy' for each event
  			freezeContentHeight();
  			currentView.element.remove();
  			header.deactivateButton(currentView.name);
  		}
  
  		header.activateButton(newViewName);
  
  		currentView = new fcViews[newViewName](
  			$("<div class='fc-view fc-view-" + newViewName + "' style='position:relative'/>")
  				.appendTo(content),
  			t // the calendar object
  		);
  
  		renderView();
  		unfreezeContentHeight();
  
  		ignoreWindowResize--;
  	}
  
  
  	function renderView(inc) {
  		if (
  			!currentView.start || // never rendered before
  			inc || date < currentView.start || date >= currentView.end // or new date range
  		) {
  			if (elementVisible()) {
  				_renderView(inc);
  			}
  		}
  	}
  
  
  	function _renderView(inc) { // assumes elementVisible
  		ignoreWindowResize++;
  
  		if (currentView.start) { // already been rendered?
  			trigger('viewDestroy', currentView, currentView, currentView.element);
  			unselect();
  			clearEvents();
  		}
  
  		freezeContentHeight();
  		currentView.render(date, inc || 0); // the view's render method ONLY renders the skeleton, nothing else
  		setSize();
  		unfreezeContentHeight();
  		(currentView.afterRender || noop)();
  
  		updateTitle();
  		updateTodayButton();
  
  		trigger('viewRender', currentView, currentView, currentView.element);
  		currentView.trigger('viewDisplay', _element); // deprecated
  
  		ignoreWindowResize--;
  
  		getAndRenderEvents();
  	}
  	
  	
  
  	/* Resizing
  	-----------------------------------------------------------------------------*/
  	
  	
  	function updateSize() {
  		if (elementVisible()) {
  			unselect();
  			clearEvents();
  			calcSize();
  			setSize();
  			renderEvents();
  		}
  	}
  	
  	
  	function calcSize() { // assumes elementVisible
  		if (options.contentHeight) {
  			suggestedViewHeight = options.contentHeight;
  		}
  		else if (options.height) {
  			suggestedViewHeight = options.height - (headerElement ? headerElement.height() : 0) - vsides(content);
  		}
  		else {
  			suggestedViewHeight = Math.round(content.width() / Math.max(options.aspectRatio, .5));
  		}
  	}
  	
  	
  	function setSize() { // assumes elementVisible
  
  		if (suggestedViewHeight === undefined) {
  			calcSize(); // for first time
  				// NOTE: we don't want to recalculate on every renderView because
  				// it could result in oscillating heights due to scrollbars.
  		}
  
  		ignoreWindowResize++;
  		currentView.setHeight(suggestedViewHeight);
  		currentView.setWidth(content.width());
  		ignoreWindowResize--;
  
  		elementOuterWidth = element.outerWidth();
  	}
  	
  	
  	function windowResize() {
  		if (!ignoreWindowResize) {
  			if (currentView.start) { // view has already been rendered
  				var uid = ++resizeUID;
  				setTimeout(function() { // add a delay
  					if (uid == resizeUID && !ignoreWindowResize && elementVisible()) {
  						if (elementOuterWidth != (elementOuterWidth = element.outerWidth())) {
  							ignoreWindowResize++; // in case the windowResize callback changes the height
  							updateSize();
  							currentView.trigger('windowResize', _element);
  							ignoreWindowResize--;
  						}
  					}
  				}, 200);
  			}else{
  				// calendar must have been initialized in a 0x0 iframe that has just been resized
  				lateRender();
  			}
  		}
  	}
  	
  	
  	
  	/* Event Fetching/Rendering
  	-----------------------------------------------------------------------------*/
  	// TODO: going forward, most of this stuff should be directly handled by the view
  
  
  	function refetchEvents() { // can be called as an API method
  		clearEvents();
  		fetchAndRenderEvents();
  	}
  
  
  	function rerenderEvents(modifiedEventID) { // can be called as an API method
  		clearEvents();
  		renderEvents(modifiedEventID);
  	}
  
  
  	function renderEvents(modifiedEventID) { // TODO: remove modifiedEventID hack
  		if (elementVisible()) {
  			currentView.setEventData(events); // for View.js, TODO: unify with renderEvents
  			currentView.renderEvents(events, modifiedEventID); // actually render the DOM elements
  			currentView.trigger('eventAfterAllRender');
  		}
  	}
  
  
  	function clearEvents() {
  		currentView.triggerEventDestroy(); // trigger 'eventDestroy' for each event
  		currentView.clearEvents(); // actually remove the DOM elements
  		currentView.clearEventData(); // for View.js, TODO: unify with clearEvents
  	}
  	
  
  	function getAndRenderEvents() {
  		if (!options.lazyFetching || isFetchNeeded(currentView.visStart, currentView.visEnd)) {
  			fetchAndRenderEvents();
  		}
  		else {
  			renderEvents();
  		}
  	}
  
  
  	function fetchAndRenderEvents() {
  		fetchEvents(currentView.visStart, currentView.visEnd);
  			// ... will call reportEvents
  			// ... which will call renderEvents
  	}
  
  	
  	// called when event data arrives
  	function reportEvents(_events) {
  		events = _events;
  		renderEvents();
  	}
  
  
  	// called when a single event's data has been changed
  	function reportEventChange(eventID) {
  		rerenderEvents(eventID);
  	}
  
  
  
  	/* Header Updating
  	-----------------------------------------------------------------------------*/
  
  
  	function updateTitle() {
  		header.updateTitle(currentView.title);
  	}
  
  
  	function updateTodayButton() {
  		var today = new Date();
  		if (today >= currentView.start && today < currentView.end) {
  			header.disableButton('today');
  		}
  		else {
  			header.enableButton('today');
  		}
  	}
  	
  
  
  	/* Selection
  	-----------------------------------------------------------------------------*/
  	
  
  	function select(start, end, allDay) {
  		currentView.select(start, end, allDay===undefined ? true : allDay);
  	}
  	
  
  	function unselect() { // safe to be called before renderView
  		if (currentView) {
  			currentView.unselect();
  		}
  	}
  	
  	
  	
  	/* Date
  	-----------------------------------------------------------------------------*/
  	
  	
  	function prev() {
  		renderView(-1);
  	}
  	
  	
  	function next() {
  		renderView(1);
  	}
  	
  	
  	function prevYear() {
  		addYears(date, -1);
  		renderView();
  	}
  	
  	
  	function nextYear() {
  		addYears(date, 1);
  		renderView();
  	}
  	
  	
  	function today() {
  		date = new Date();
  		renderView();
  	}
  	
  	
  	function gotoDate(year, month, dateOfMonth) {
  		if (year instanceof Date) {
  			date = cloneDate(year); // provided 1 argument, a Date
  		}else{
  			setYMD(date, year, month, dateOfMonth);
  		}
  		renderView();
  	}
  	
  	
  	function incrementDate(years, months, days) {
  		if (years !== undefined) {
  			addYears(date, years);
  		}
  		if (months !== undefined) {
  			addMonths(date, months);
  		}
  		if (days !== undefined) {
  			addDays(date, days);
  		}
  		renderView();
  	}
  	
  	
  	function getDate() {
  		return cloneDate(date);
  	}
  
  
  
  	/* Height "Freezing"
  	-----------------------------------------------------------------------------*/
  
  
  	function freezeContentHeight() {
  		content.css({
  			width: '100%',
  			height: content.height(),
  			overflow: 'hidden'
  		});
  	}
  
  
  	function unfreezeContentHeight() {
  		content.css({
  			width: '',
  			height: '',
  			overflow: ''
  		});
  	}
  	
  	
  	
  	/* Misc
  	-----------------------------------------------------------------------------*/
  	
  	
  	function getView() {
  		return currentView;
  	}
  	
  	
  	function option(name, value) {
  		if (value === undefined) {
  			return options[name];
  		}
  		if (name == 'height' || name == 'contentHeight' || name == 'aspectRatio') {
  			options[name] = value;
  			updateSize();
  		}
  	}
  	
  	
  	function trigger(name, thisObj) {
  		if (options[name]) {
  			return options[name].apply(
  				thisObj || _element,
  				Array.prototype.slice.call(arguments, 2)
  			);
  		}
  	}
  	
  	
  	
  	/* External Dragging
  	------------------------------------------------------------------------*/
  	
  	if (options.droppable) {
  		$(document)
  			.bind('dragstart', function(ev, ui) {
  				var _e = ev.target;
  				var e = $(_e);
  				if (!e.parents('.fc').length) { // not already inside a calendar
  					var accept = options.dropAccept;
  					if ($.isFunction(accept) ? accept.call(_e, e) : e.is(accept)) {
  						_dragElement = _e;
  						currentView.dragStart(_dragElement, ev, ui);
  					}
  				}
  			})
  			.bind('dragstop', function(ev, ui) {
  				if (_dragElement) {
  					currentView.dragStop(_dragElement, ev, ui);
  					_dragElement = null;
  				}
  			});
  	}
  	
  
  }
  
  ;;
  
  function Header(calendar, options) {
  	var t = this;
  	
  	
  	// exports
  	t.render = render;
  	t.destroy = destroy;
  	t.updateTitle = updateTitle;
  	t.activateButton = activateButton;
  	t.deactivateButton = deactivateButton;
  	t.disableButton = disableButton;
  	t.enableButton = enableButton;
  	
  	
  	// locals
  	var element = $([]);
  	var tm;
  	
  
  
  	function render() {
  		tm = options.theme ? 'ui' : 'fc';
  		var sections = options.header;
  		if (sections) {
  			element = $("<table class='fc-header' style='width:100%'/>")
  				.append(
  					$("<tr/>")
  						.append(renderSection('left'))
  						.append(renderSection('center'))
  						.append(renderSection('right'))
  				);
  			return element;
  		}
  	}
  	
  	
  	function destroy() {
  		element.remove();
  	}
  	
  	
  	function renderSection(position) {
  		var e = $("<td class='fc-header-" + position + "'/>");
  		var buttonStr = options.header[position];
  		if (buttonStr) {
  			$.each(buttonStr.split(' '), function(i) {
  				if (i > 0) {
  					e.append("<span class='fc-header-space'/>");
  				}
  				var prevButton;
  				$.each(this.split(','), function(j, buttonName) {
  					if (buttonName == 'title') {
  						e.append("<span class='fc-header-title'><h2>&nbsp;</h2></span>");
  						if (prevButton) {
  							prevButton.addClass(tm + '-corner-right');
  						}
  						prevButton = null;
  					}else{
  						var buttonClick;
  						if (calendar[buttonName]) {
  							buttonClick = calendar[buttonName]; // calendar method
  						}
  						else if (fcViews[buttonName]) {
  							buttonClick = function() {
  								button.removeClass(tm + '-state-hover'); // forget why
  								calendar.changeView(buttonName);
  							};
  						}
  						if (buttonClick) {
  							var icon = options.theme ? smartProperty(options.buttonIcons, buttonName) : null; // why are we using smartProperty here?
  							var text = smartProperty(options.buttonText, buttonName); // why are we using smartProperty here?
  							var button = $(
  								"<span class='fc-button fc-button-" + buttonName + " " + tm + "-state-default'>" +
  									(icon ?
  										"<span class='fc-icon-wrap'>" +
  											"<span class='ui-icon ui-icon-" + icon + "'/>" +
  										"</span>" :
  										text
  										) +
  								"</span>"
  								)
  								.click(function() {
  									if (!button.hasClass(tm + '-state-disabled')) {
  										buttonClick();
  									}
  								})
  								.mousedown(function() {
  									button
  										.not('.' + tm + '-state-active')
  										.not('.' + tm + '-state-disabled')
  										.addClass(tm + '-state-down');
  								})
  								.mouseup(function() {
  									button.removeClass(tm + '-state-down');
  								})
  								.hover(
  									function() {
  										button
  											.not('.' + tm + '-state-active')
  											.not('.' + tm + '-state-disabled')
  											.addClass(tm + '-state-hover');
  									},
  									function() {
  										button
  											.removeClass(tm + '-state-hover')
  											.removeClass(tm + '-state-down');
  									}
  								)
  								.appendTo(e);
  							disableTextSelection(button);
  							if (!prevButton) {
  								button.addClass(tm + '-corner-left');
  							}
  							prevButton = button;
  						}
  					}
  				});
  				if (prevButton) {
  					prevButton.addClass(tm + '-corner-right');
  				}
  			});
  		}
  		return e;
  	}
  	
  	
  	function updateTitle(html) {
  		element.find('h2')
  			.html(html);
  	}
  	
  	
  	function activateButton(buttonName) {
  		element.find('span.fc-button-' + buttonName)
  			.addClass(tm + '-state-active');
  	}
  	
  	
  	function deactivateButton(buttonName) {
  		element.find('span.fc-button-' + buttonName)
  			.removeClass(tm + '-state-active');
  	}
  	
  	
  	function disableButton(buttonName) {
  		element.find('span.fc-button-' + buttonName)
  			.addClass(tm + '-state-disabled');
  	}
  	
  	
  	function enableButton(buttonName) {
  		element.find('span.fc-button-' + buttonName)
  			.removeClass(tm + '-state-disabled');
  	}
  
  
  }
  
  ;;
  
  fc.sourceNormalizers = [];
  fc.sourceFetchers = [];
  
  var ajaxDefaults = {
  	dataType: 'json',
  	cache: false
  };
  
  var eventGUID = 1;
  
  
  function EventManager(options, _sources) {
  	var t = this;
  	
  	
  	// exports
  	t.isFetchNeeded = isFetchNeeded;
  	t.fetchEvents = fetchEvents;
  	t.addEventSource = addEventSource;
  	t.removeEventSource = removeEventSource;
  	t.updateEvent = updateEvent;
  	t.renderEvent = renderEvent;
  	t.removeEvents = removeEvents;
  	t.clientEvents = clientEvents;
  	t.normalizeEvent = normalizeEvent;
  	
  	
  	// imports
  	var trigger = t.trigger;
  	var getView = t.getView;
  	var reportEvents = t.reportEvents;
  	
  	
  	// locals
  	var stickySource = { events: [] };
  	var sources = [ stickySource ];
  	var rangeStart, rangeEnd;
  	var currentFetchID = 0;
  	var pendingSourceCnt = 0;
  	var loadingLevel = 0;
  	var cache = [];
  	
  	
  	for (var i=0; i<_sources.length; i++) {
  		_addEventSource(_sources[i]);
  	}
  	
  	
  	
  	/* Fetching
  	-----------------------------------------------------------------------------*/
  	
  	
  	function isFetchNeeded(start, end) {
  		return !rangeStart || start < rangeStart || end > rangeEnd;
  	}
  	
  	
  	function fetchEvents(start, end) {
  		rangeStart = start;
  		rangeEnd = end;
  		cache = [];
  		var fetchID = ++currentFetchID;
  		var len = sources.length;
  		pendingSourceCnt = len;
  		for (var i=0; i<len; i++) {
  			fetchEventSource(sources[i], fetchID);
  		}
  	}
  	
  	
  	function fetchEventSource(source, fetchID) {
  		_fetchEventSource(source, function(events) {
  			if (fetchID == currentFetchID) {
  				if (events) {
  
  					if (options.eventDataTransform) {
  						events = $.map(events, options.eventDataTransform);
  					}
  					if (source.eventDataTransform) {
  						events = $.map(events, source.eventDataTransform);
  					}
  					// TODO: this technique is not ideal for static array event sources.
  					//  For arrays, we'll want to process all events right in the beginning, then never again.
  				
  					for (var i=0; i<events.length; i++) {
  						events[i].source = source;
  						normalizeEvent(events[i]);
  					}
  					cache = cache.concat(events);
  				}
  				pendingSourceCnt--;
  				if (!pendingSourceCnt) {
  					reportEvents(cache);
  				}
  			}
  		});
  	}
  	
  	
  	function _fetchEventSource(source, callback) {
  		var i;
  		var fetchers = fc.sourceFetchers;
  		var res;
  		for (i=0; i<fetchers.length; i++) {
  			res = fetchers[i](source, rangeStart, rangeEnd, callback);
  			if (res === true) {
  				// the fetcher is in charge. made its own async request
  				return;
  			}
  			else if (typeof res == 'object') {
  				// the fetcher returned a new source. process it
  				_fetchEventSource(res, callback);
  				return;
  			}
  		}
  		var events = source.events;
  		if (events) {
  			if ($.isFunction(events)) {
  				pushLoading();
  				events(cloneDate(rangeStart), cloneDate(rangeEnd), function(events) {
  					callback(events);
  					popLoading();
  				});
  			}
  			else if ($.isArray(events)) {
  				callback(events);
  			}
  			else {
  				callback();
  			}
  		}else{
  			var url = source.url;
  			if (url) {
  				var success = source.success;
  				var error = source.error;
  				var complete = source.complete;
  
  				// retrieve any outbound GET/POST $.ajax data from the options
  				var customData;
  				if ($.isFunction(source.data)) {
  					// supplied as a function that returns a key/value object
  					customData = source.data();
  				}
  				else {
  					// supplied as a straight key/value object
  					customData = source.data;
  				}
  
  				// use a copy of the custom data so we can modify the parameters
  				// and not affect the passed-in object.
  				var data = $.extend({}, customData || {});
  
  				var startParam = firstDefined(source.startParam, options.startParam);
  				var endParam = firstDefined(source.endParam, options.endParam);
  				if (startParam) {
  					data[startParam] = Math.round(+rangeStart / 1000);
  				}
  				if (endParam) {
  					data[endParam] = Math.round(+rangeEnd / 1000);
  				}
  
  				pushLoading();
  				$.ajax($.extend({}, ajaxDefaults, source, {
  					data: data,
  					success: function(events) {
  						events = events || [];
  						var res = applyAll(success, this, arguments);
  						if ($.isArray(res)) {
  							events = res;
  						}
  						callback(events);
  					},
  					error: function() {
  						applyAll(error, this, arguments);
  						callback();
  					},
  					complete: function() {
  						applyAll(complete, this, arguments);
  						popLoading();
  					}
  				}));
  			}else{
  				callback();
  			}
  		}
  	}
  	
  	
  	
  	/* Sources
  	-----------------------------------------------------------------------------*/
  	
  
  	function addEventSource(source) {
  		source = _addEventSource(source);
  		if (source) {
  			pendingSourceCnt++;
  			fetchEventSource(source, currentFetchID); // will eventually call reportEvents
  		}
  	}
  	
  	
  	function _addEventSource(source) {
  		if ($.isFunction(source) || $.isArray(source)) {
  			source = { events: source };
  		}
  		else if (typeof source == 'string') {
  			source = { url: source };
  		}
  		if (typeof source == 'object') {
  			normalizeSource(source);
  			sources.push(source);
  			return source;
  		}
  	}
  	
  
  	function removeEventSource(source) {
  		sources = $.grep(sources, function(src) {
  			return !isSourcesEqual(src, source);
  		});
  		// remove all client events from that source
  		cache = $.grep(cache, function(e) {
  			return !isSourcesEqual(e.source, source);
  		});
  		reportEvents(cache);
  	}
  	
  	
  	
  	/* Manipulation
  	-----------------------------------------------------------------------------*/
  	
  	
  	function updateEvent(event) { // update an existing event
  		var i, len = cache.length, e,
  			defaultEventEnd = getView().defaultEventEnd, // getView???
  			startDelta = event.start - event._start,
  			endDelta = event.end ?
  				(event.end - (event._end || defaultEventEnd(event))) // event._end would be null if event.end
  				: 0;                                                      // was null and event was just resized
  		for (i=0; i<len; i++) {
  			e = cache[i];
  			if (e._id == event._id && e != event) {
  				e.start = new Date(+e.start + startDelta);
  				if (event.end) {
  					if (e.end) {
  						e.end = new Date(+e.end + endDelta);
  					}else{
  						e.end = new Date(+defaultEventEnd(e) + endDelta);
  					}
  				}else{
  					e.end = null;
  				}
  				e.title = event.title;
  				e.url = event.url;
  				e.allDay = event.allDay;
  				e.className = event.className;
  				e.editable = event.editable;
  				e.color = event.color;
  				e.backgroundColor = event.backgroundColor;
  				e.borderColor = event.borderColor;
  				e.textColor = event.textColor;
  				normalizeEvent(e);
  			}
  		}
  		normalizeEvent(event);
  		reportEvents(cache);
  	}
  	
  	
  	function renderEvent(event, stick) {
  		normalizeEvent(event);
  		if (!event.source) {
  			if (stick) {
  				stickySource.events.push(event);
  				event.source = stickySource;
  			}
  			cache.push(event);
  		}
  		reportEvents(cache);
  	}
  	
  	
  	function removeEvents(filter) {
  		if (!filter) { // remove all
  			cache = [];
  			// clear all array sources
  			for (var i=0; i<sources.length; i++) {
  				if ($.isArray(sources[i].events)) {
  					sources[i].events = [];
  				}
  			}
  		}else{
  			if (!$.isFunction(filter)) { // an event ID
  				var id = filter + '';
  				filter = function(e) {
  					return e._id == id;
  				};
  			}
  			cache = $.grep(cache, filter, true);
  			// remove events from array sources
  			for (var i=0; i<sources.length; i++) {
  				if ($.isArray(sources[i].events)) {
  					sources[i].events = $.grep(sources[i].events, filter, true);
  				}
  			}
  		}
  		reportEvents(cache);
  	}
  	
  	
  	function clientEvents(filter) {
  		if ($.isFunction(filter)) {
  			return $.grep(cache, filter);
  		}
  		else if (filter) { // an event ID
  			filter += '';
  			return $.grep(cache, function(e) {
  				return e._id == filter;
  			});
  		}
  		return cache; // else, return all
  	}
  	
  	
  	
  	/* Loading State
  	-----------------------------------------------------------------------------*/
  	
  	
  	function pushLoading() {
  		if (!loadingLevel++) {
  			trigger('loading', null, true, getView());
  		}
  	}
  	
  	
  	function popLoading() {
  		if (!--loadingLevel) {
  			trigger('loading', null, false, getView());
  		}
  	}
  	
  	
  	
  	/* Event Normalization
  	-----------------------------------------------------------------------------*/
  	
  	
  	function normalizeEvent(event) {
  		var source = event.source || {};
  		var ignoreTimezone = firstDefined(source.ignoreTimezone, options.ignoreTimezone);
  		event._id = event._id || (event.id === undefined ? '_fc' + eventGUID++ : event.id + '');
  		if (event.date) {
  			if (!event.start) {
  				event.start = event.date;
  			}
  			delete event.date;
  		}
  		event._start = cloneDate(event.start = parseDate(event.start, ignoreTimezone));
  		event.end = parseDate(event.end, ignoreTimezone);
  		if (event.end && event.end <= event.start) {
  			event.end = null;
  		}
  		event._end = event.end ? cloneDate(event.end) : null;
  		if (event.allDay === undefined) {
  			event.allDay = firstDefined(source.allDayDefault, options.allDayDefault);
  		}
  		if (event.className) {
  			if (typeof event.className == 'string') {
  				event.className = event.className.split(/\s+/);
  			}
  		}else{
  			event.className = [];
  		}
  		// TODO: if there is no start date, return false to indicate an invalid event
  	}
  	
  	
  	
  	/* Utils
  	------------------------------------------------------------------------------*/
  	
  	
  	function normalizeSource(source) {
  		if (source.className) {
  			// TODO: repeat code, same code for event classNames
  			if (typeof source.className == 'string') {
  				source.className = source.className.split(/\s+/);
  			}
  		}else{
  			source.className = [];
  		}
  		var normalizers = fc.sourceNormalizers;
  		for (var i=0; i<normalizers.length; i++) {
  			normalizers[i](source);
  		}
  	}
  	
  	
  	function isSourcesEqual(source1, source2) {
  		return source1 && source2 && getSourcePrimitive(source1) == getSourcePrimitive(source2);
  	}
  	
  	
  	function getSourcePrimitive(source) {
  		return ((typeof source == 'object') ? (source.events || source.url) : '') || source;
  	}
  
  
  }
  
  ;;
  
  
  fc.addDays = addDays;
  fc.cloneDate = cloneDate;
  fc.parseDate = parseDate;
  fc.parseISO8601 = parseISO8601;
  fc.parseTime = parseTime;
  fc.formatDate = formatDate;
  fc.formatDates = formatDates;
  
  
  
  /* Date Math
  -----------------------------------------------------------------------------*/
  
  var dayIDs = ['sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat'],
  	DAY_MS = 86400000,
  	HOUR_MS = 3600000,
  	MINUTE_MS = 60000;
  	
  
  function addYears(d, n, keepTime) {
  	d.setFullYear(d.getFullYear() + n);
  	if (!keepTime) {
  		clearTime(d);
  	}
  	return d;
  }
  
  
  function addMonths(d, n, keepTime) { // prevents day overflow/underflow
  	if (+d) { // prevent infinite looping on invalid dates
  		var m = d.getMonth() + n,
  			check = cloneDate(d);
  		check.setDate(1);
  		check.setMonth(m);
  		d.setMonth(m);
  		if (!keepTime) {
  			clearTime(d);
  		}
  		while (d.getMonth() != check.getMonth()) {
  			d.setDate(d.getDate() + (d < check ? 1 : -1));
  		}
  	}
  	return d;
  }
  
  
  function addDays(d, n, keepTime) { // deals with daylight savings
  	if (+d) {
  		var dd = d.getDate() + n,
  			check = cloneDate(d);
  		check.setHours(9); // set to middle of day
  		check.setDate(dd);
  		d.setDate(dd);
  		if (!keepTime) {
  			clearTime(d);
  		}
  		fixDate(d, check);
  	}
  	return d;
  }
  
  
  function fixDate(d, check) { // force d to be on check's YMD, for daylight savings purposes
  	if (+d) { // prevent infinite looping on invalid dates
  		while (d.getDate() != check.getDate()) {
  			d.setTime(+d + (d < check ? 1 : -1) * HOUR_MS);
  		}
  	}
  }
  
  
  function addMinutes(d, n) {
  	d.setMinutes(d.getMinutes() + n);
  	return d;
  }
  
  
  function clearTime(d) {
  	d.setHours(0);
  	d.setMinutes(0);
  	d.setSeconds(0); 
  	d.setMilliseconds(0);
  	return d;
  }
  
  
  function cloneDate(d, dontKeepTime) {
  	if (dontKeepTime) {
  		return clearTime(new Date(+d));
  	}
  	return new Date(+d);
  }
  
  
  function zeroDate() { // returns a Date with time 00:00:00 and dateOfMonth=1
  	var i=0, d;
  	do {
  		d = new Date(1970, i++, 1);
  	} while (d.getHours()); // != 0
  	return d;
  }
  
  
  function dayDiff(d1, d2) { // d1 - d2
  	return Math.round((cloneDate(d1, true) - cloneDate(d2, true)) / DAY_MS);
  }
  
  
  function setYMD(date, y, m, d) {
  	if (y !== undefined && y != date.getFullYear()) {
  		date.setDate(1);
  		date.setMonth(0);
  		date.setFullYear(y);
  	}
  	if (m !== undefined && m != date.getMonth()) {
  		date.setDate(1);
  		date.setMonth(m);
  	}
  	if (d !== undefined) {
  		date.setDate(d);
  	}
  }
  
  
  
  /* Date Parsing
  -----------------------------------------------------------------------------*/
  
  
  function parseDate(s, ignoreTimezone) { // ignoreTimezone defaults to true
  	if (typeof s == 'object') { // already a Date object
  		return s;
  	}
  	if (typeof s == 'number') { // a UNIX timestamp
  		return new Date(s * 1000);
  	}
  	if (typeof s == 'string') {
  		if (s.match(/^\d+(\.\d+)?$/)) { // a UNIX timestamp
  			return new Date(parseFloat(s) * 1000);
  		}
  		if (ignoreTimezone === undefined) {
  			ignoreTimezone = true;
  		}
  		return parseISO8601(s, ignoreTimezone) || (s ? new Date(s) : null);
  	}
  	// TODO: never return invalid dates (like from new Date(<string>)), return null instead
  	return null;
  }
  
  
  function parseISO8601(s, ignoreTimezone) { // ignoreTimezone defaults to false
  	// derived from http://delete.me.uk/2005/03/iso8601.html
  	// TODO: for a know glitch/feature, read tests/issue_206_parseDate_dst.html
  	var m = s.match(/^([0-9]{4})(-([0-9]{2})(-([0-9]{2})([T ]([0-9]{2}):([0-9]{2})(:([0-9]{2})(\.([0-9]+))?)?(Z|(([-+])([0-9]{2})(:?([0-9]{2}))?))?)?)?)?$/);
  	if (!m) {
  		return null;
  	}
  	var date = new Date(m[1], 0, 1);
  	if (ignoreTimezone || !m[13]) {
  		var check = new Date(m[1], 0, 1, 9, 0);
  		if (m[3]) {
  			date.setMonth(m[3] - 1);
  			check.setMonth(m[3] - 1);
  		}
  		if (m[5]) {
  			date.setDate(m[5]);
  			check.setDate(m[5]);
  		}
  		fixDate(date, check);
  		if (m[7]) {
  			date.setHours(m[7]);
  		}
  		if (m[8]) {
  			date.setMinutes(m[8]);
  		}
  		if (m[10]) {
  			date.setSeconds(m[10]);
  		}
  		if (m[12]) {
  			date.setMilliseconds(Number("0." + m[12]) * 1000);
  		}
  		fixDate(date, check);
  	}else{
  		date.setUTCFullYear(
  			m[1],
  			m[3] ? m[3] - 1 : 0,
  			m[5] || 1
  		);
  		date.setUTCHours(
  			m[7] || 0,
  			m[8] || 0,
  			m[10] || 0,
  			m[12] ? Number("0." + m[12]) * 1000 : 0
  		);
  		if (m[14]) {
  			var offset = Number(m[16]) * 60 + (m[18] ? Number(m[18]) : 0);
  			offset *= m[15] == '-' ? 1 : -1;
  			date = new Date(+date + (offset * 60 * 1000));
  		}
  	}
  	return date;
  }
  
  
  function parseTime(s) { // returns minutes since start of day
  	if (typeof s == 'number') { // an hour
  		return s * 60;
  	}
  	if (typeof s == 'object') { // a Date object
  		return s.getHours() * 60 + s.getMinutes();
  	}
  	var m = s.match(/(\d+)(?::(\d+))?\s*(\w+)?/);
  	if (m) {
  		var h = parseInt(m[1], 10);
  		if (m[3]) {
  			h %= 12;
  			if (m[3].toLowerCase().charAt(0) == 'p') {
  				h += 12;
  			}
  		}
  		return h * 60 + (m[2] ? parseInt(m[2], 10) : 0);
  	}
  }
  
  
  
  /* Date Formatting
  -----------------------------------------------------------------------------*/
  // TODO: use same function formatDate(date, [date2], format, [options])
  
  
  function formatDate(date, format, options) {
  	return formatDates(date, null, format, options);
  }
  
  
  function formatDates(date1, date2, format, options) {
  	options = options || defaults;
  	var date = date1,
  		otherDate = date2,
  		i, len = format.length, c,
  		i2, formatter,
  		res = '';
  	for (i=0; i<len; i++) {
  		c = format.charAt(i);
  		if (c == "'") {
  			for (i2=i+1; i2<len; i2++) {
  				if (format.charAt(i2) == "'") {
  					if (date) {
  						if (i2 == i+1) {
  							res += "'";
  						}else{
  							res += format.substring(i+1, i2);
  						}
  						i = i2;
  					}
  					break;
  				}
  			}
  		}
  		else if (c == '(') {
  			for (i2=i+1; i2<len; i2++) {
  				if (format.charAt(i2) == ')') {
  					var subres = formatDate(date, format.substring(i+1, i2), options);
  					if (parseInt(subres.replace(/\D/, ''), 10)) {
  						res += subres;
  					}
  					i = i2;
  					break;
  				}
  			}
  		}
  		else if (c == '[') {
  			for (i2=i+1; i2<len; i2++) {
  				if (format.charAt(i2) == ']') {
  					var subformat = format.substring(i+1, i2);
  					var subres = formatDate(date, subformat, options);
  					if (subres != formatDate(otherDate, subformat, options)) {
  						res += subres;
  					}
  					i = i2;
  					break;
  				}
  			}
  		}
  		else if (c == '{') {
  			date = date2;
  			otherDate = date1;
  		}
  		else if (c == '}') {
  			date = date1;
  			otherDate = date2;
  		}
  		else {
  			for (i2=len; i2>i; i2--) {
  				if (formatter = dateFormatters[format.substring(i, i2)]) {
  					if (date) {
  						res += formatter(date, options);
  					}
  					i = i2 - 1;
  					break;
  				}
  			}
  			if (i2 == i) {
  				if (date) {
  					res += c;
  				}
  			}
  		}
  	}
  	return res;
  };
  
  
  var dateFormatters = {
  	s	: function(d)	{ return d.getSeconds() },
  	ss	: function(d)	{ return zeroPad(d.getSeconds()) },
  	m	: function(d)	{ return d.getMinutes() },
  	mm	: function(d)	{ return zeroPad(d.getMinutes()) },
  	h	: function(d)	{ return d.getHours() % 12 || 12 },
  	hh	: function(d)	{ return zeroPad(d.getHours() % 12 || 12) },
  	H	: function(d)	{ return d.getHours() },
  	HH	: function(d)	{ return zeroPad(d.getHours()) },
  	d	: function(d)	{ return d.getDate() },
  	dd	: function(d)	{ return zeroPad(d.getDate()) },
  	ddd	: function(d,o)	{ return o.dayNamesShort[d.getDay()] },
  	dddd: function(d,o)	{ return o.dayNames[d.getDay()] },
  	M	: function(d)	{ return d.getMonth() + 1 },
  	MM	: function(d)	{ return zeroPad(d.getMonth() + 1) },
  	MMM	: function(d,o)	{ return o.monthNamesShort[d.getMonth()] },
  	MMMM: function(d,o)	{ return o.monthNames[d.getMonth()] },
  	yy	: function(d)	{ return (d.getFullYear()+'').substring(2) },
  	yyyy: function(d)	{ return d.getFullYear() },
  	t	: function(d)	{ return d.getHours() < 12 ? 'a' : 'p' },
  	tt	: function(d)	{ return d.getHours() < 12 ? 'am' : 'pm' },
  	T	: function(d)	{ return d.getHours() < 12 ? 'A' : 'P' },
  	TT	: function(d)	{ return d.getHours() < 12 ? 'AM' : 'PM' },
  	u	: function(d)	{ return formatDate(d, "yyyy-MM-dd'T'HH:mm:ss'Z'") },
  	S	: function(d)	{
  		var date = d.getDate();
  		if (date > 10 && date < 20) {
  			return 'th';
  		}
  		return ['st', 'nd', 'rd'][date%10-1] || 'th';
  	},
  	w   : function(d, o) { // local
  		return o.weekNumberCalculation(d);
  	},
  	W   : function(d) { // ISO
  		return iso8601Week(d);
  	}
  };
  fc.dateFormatters = dateFormatters;
  
  
  /* thanks jQuery UI (https://github.com/jquery/jquery-ui/blob/master/ui/jquery.ui.datepicker.js)
   * 
   * Set as calculateWeek to determine the week of the year based on the ISO 8601 definition.
   * `date` - the date to get the week for
   * `number` - the number of the week within the year that contains this date
   */
  function iso8601Week(date) {
  	var time;
  	var checkDate = new Date(date.getTime());
  
  	// Find Thursday of this week starting on Monday
  	checkDate.setDate(checkDate.getDate() + 4 - (checkDate.getDay() || 7));
  
  	time = checkDate.getTime();
  	checkDate.setMonth(0); // Compare with Jan 1
  	checkDate.setDate(1);
  	return Math.floor(Math.round((time - checkDate) / 86400000) / 7) + 1;
  }
  
  
  ;;
  
  fc.applyAll = applyAll;
  
  
  /* Event Date Math
  -----------------------------------------------------------------------------*/
  
  
  function exclEndDay(event) {
  	if (event.end) {
  		return _exclEndDay(event.end, event.allDay);
  	}else{
  		return addDays(cloneDate(event.start), 1);
  	}
  }
  
  
  function _exclEndDay(end, allDay) {
  	end = cloneDate(end);
  	return allDay || end.getHours() || end.getMinutes() ? addDays(end, 1) : clearTime(end);
  	// why don't we check for seconds/ms too?
  }
  
  
  
  /* Event Element Binding
  -----------------------------------------------------------------------------*/
  
  
  function lazySegBind(container, segs, bindHandlers) {
  	container.unbind('mouseover').mouseover(function(ev) {
  		var parent=ev.target, e,
  			i, seg;
  		while (parent != this) {
  			e = parent;
  			parent = parent.parentNode;
  		}
  		if ((i = e._fci) !== undefined) {
  			e._fci = undefined;
  			seg = segs[i];
  			bindHandlers(seg.event, seg.element, seg);
  			$(ev.target).trigger(ev);
  		}
  		ev.stopPropagation();
  	});
  }
  
  
  
  /* Element Dimensions
  -----------------------------------------------------------------------------*/
  
  
  function setOuterWidth(element, width, includeMargins) {
  	for (var i=0, e; i<element.length; i++) {
  		e = $(element[i]);
  		e.width(Math.max(0, width - hsides(e, includeMargins)));
  	}
  }
  
  
  function setOuterHeight(element, height, includeMargins) {
  	for (var i=0, e; i<element.length; i++) {
  		e = $(element[i]);
  		e.height(Math.max(0, height - vsides(e, includeMargins)));
  	}
  }
  
  
  function hsides(element, includeMargins) {
  	return hpadding(element) + hborders(element) + (includeMargins ? hmargins(element) : 0);
  }
  
  
  function hpadding(element) {
  	return (parseFloat($.css(element[0], 'paddingLeft', true)) || 0) +
  	       (parseFloat($.css(element[0], 'paddingRight', true)) || 0);
  }
  
  
  function hmargins(element) {
  	return (parseFloat($.css(element[0], 'marginLeft', true)) || 0) +
  	       (parseFloat($.css(element[0], 'marginRight', true)) || 0);
  }
  
  
  function hborders(element) {
  	return (parseFloat($.css(element[0], 'borderLeftWidth', true)) || 0) +
  	       (parseFloat($.css(element[0], 'borderRightWidth', true)) || 0);
  }
  
  
  function vsides(element, includeMargins) {
  	return vpadding(element) +  vborders(element) + (includeMargins ? vmargins(element) : 0);
  }
  
  
  function vpadding(element) {
  	return (parseFloat($.css(element[0], 'paddingTop', true)) || 0) +
  	       (parseFloat($.css(element[0], 'paddingBottom', true)) || 0);
  }
  
  
  function vmargins(element) {
  	return (parseFloat($.css(element[0], 'marginTop', true)) || 0) +
  	       (parseFloat($.css(element[0], 'marginBottom', true)) || 0);
  }
  
  
  function vborders(element) {
  	return (parseFloat($.css(element[0], 'borderTopWidth', true)) || 0) +
  	       (parseFloat($.css(element[0], 'borderBottomWidth', true)) || 0);
  }
  
  
  
  /* Misc Utils
  -----------------------------------------------------------------------------*/
  
  
  //TODO: arraySlice
  //TODO: isFunction, grep ?
  
  
  function noop() { }
  
  
  function dateCompare(a, b) {
  	return a - b;
  }
  
  
  function arrayMax(a) {
  	return Math.max.apply(Math, a);
  }
  
  
  function zeroPad(n) {
  	return (n < 10 ? '0' : '') + n;
  }
  
  
  function smartProperty(obj, name) { // get a camel-cased/namespaced property of an object
  	if (obj[name] !== undefined) {
  		return obj[name];
  	}
  	var parts = name.split(/(?=[A-Z])/),
  		i=parts.length-1, res;
  	for (; i>=0; i--) {
  		res = obj[parts[i].toLowerCase()];
  		if (res !== undefined) {
  			return res;
  		}
  	}
  	return obj[''];
  }
  
  
  function htmlEscape(s) {
  	return s.replace(/&/g, '&amp;')
  		.replace(/</g, '&lt;')
  		.replace(/>/g, '&gt;')
  		.replace(/'/g, '&#039;')
  		.replace(/"/g, '&quot;')
  		.replace(/\n/g, '<br />');
  }
  
  
  function disableTextSelection(element) {
  	element
  		.attr('unselectable', 'on')
  		.css('MozUserSelect', 'none')
  		.bind('selectstart.ui', function() { return false; });
  }
  
  
  /*
  function enableTextSelection(element) {
  	element
  		.attr('unselectable', 'off')
  		.css('MozUserSelect', '')
  		.unbind('selectstart.ui');
  }
  */
  
  
  function markFirstLast(e) {
  	e.children()
  		.removeClass('fc-first fc-last')
  		.filter(':first-child')
  			.addClass('fc-first')
  		.end()
  		.filter(':last-child')
  			.addClass('fc-last');
  }
  
  
  function setDayID(cell, date) {
  	cell.each(function(i, _cell) {
  		_cell.className = _cell.className.replace(/^fc-\w*/, 'fc-' + dayIDs[date.getDay()]);
  		// TODO: make a way that doesn't rely on order of classes
  	});
  }
  
  
  function getSkinCss(event, opt) {
  	var source = event.source || {};
  	var eventColor = event.color;
  	var sourceColor = source.color;
  	var optionColor = opt('eventColor');
  	var backgroundColor =
  		event.backgroundColor ||
  		eventColor ||
  		source.backgroundColor ||
  		sourceColor ||
  		opt('eventBackgroundColor') ||
  		optionColor;
  	var borderColor =
  		event.borderColor ||
  		eventColor ||
  		source.borderColor ||
  		sourceColor ||
  		opt('eventBorderColor') ||
  		optionColor;
  	var textColor =
  		event.textColor ||
  		source.textColor ||
  		opt('eventTextColor');
  	var statements = [];
  	if (backgroundColor) {
  		statements.push('background-color:' + backgroundColor);
  	}
  	if (borderColor) {
  		statements.push('border-color:' + borderColor);
  	}
  	if (textColor) {
  		statements.push('color:' + textColor);
  	}
  	return statements.join(';');
  }
  
  
  function applyAll(functions, thisObj, args) {
  	if ($.isFunction(functions)) {
  		functions = [ functions ];
  	}
  	if (functions) {
  		var i;
  		var ret;
  		for (i=0; i<functions.length; i++) {
  			ret = functions[i].apply(thisObj, args) || ret;
  		}
  		return ret;
  	}
  }
  
  
  function firstDefined() {
  	for (var i=0; i<arguments.length; i++) {
  		if (arguments[i] !== undefined) {
  			return arguments[i];
  		}
  	}
  }
  
  
  ;;
  
  fcViews.month = MonthView;
  
  function MonthView(element, calendar) {
  	var t = this;
  	
  	
  	// exports
  	t.render = render;
  	
  	
  	// imports
  	BasicView.call(t, element, calendar, 'month');
  	var opt = t.opt;
  	var renderBasic = t.renderBasic;
  	var skipHiddenDays = t.skipHiddenDays;
  	var getCellsPerWeek = t.getCellsPerWeek;
  	var formatDate = calendar.formatDate;
  	
  	
  	function render(date, delta) {
  
  		if (delta) {
  			addMonths(date, delta);
  			date.setDate(1);
  		}
  
  		var firstDay = opt('firstDay');
  
  		var start = cloneDate(date, true);
  		start.setDate(1);
  
  		var end = addMonths(cloneDate(start), 1);
  
  		var visStart = cloneDate(start);
  		addDays(visStart, -((visStart.getDay() - firstDay + 7) % 7));
  		skipHiddenDays(visStart);
  
  		var visEnd = cloneDate(end);
  		addDays(visEnd, (7 - visEnd.getDay() + firstDay) % 7);
  		skipHiddenDays(visEnd, -1, true);
  
  		var colCnt = getCellsPerWeek();
  		var rowCnt = Math.round(dayDiff(visEnd, visStart) / 7); // should be no need for Math.round
  
  		if (opt('weekMode') == 'fixed') {
  			addDays(visEnd, (6 - rowCnt) * 7); // add weeks to make up for it
  			rowCnt = 6;
  		}
  
  		t.title = formatDate(start, opt('titleFormat'));
  
  		t.start = start;
  		t.end = end;
  		t.visStart = visStart;
  		t.visEnd = visEnd;
  
  		renderBasic(rowCnt, colCnt, true);
  	}
  	
  	
  }
  
  ;;
  
  fcViews.basicWeek = BasicWeekView;
  
  function BasicWeekView(element, calendar) {
  	var t = this;
  	
  	
  	// exports
  	t.render = render;
  	
  	
  	// imports
  	BasicView.call(t, element, calendar, 'basicWeek');
  	var opt = t.opt;
  	var renderBasic = t.renderBasic;
  	var skipHiddenDays = t.skipHiddenDays;
  	var getCellsPerWeek = t.getCellsPerWeek;
  	var formatDates = calendar.formatDates;
  	
  	
  	function render(date, delta) {
  
  		if (delta) {
  			addDays(date, delta * 7);
  		}
  
  		var start = addDays(cloneDate(date), -((date.getDay() - opt('firstDay') + 7) % 7));
  		var end = addDays(cloneDate(start), 7);
  
  		var visStart = cloneDate(start);
  		skipHiddenDays(visStart);
  
  		var visEnd = cloneDate(end);
  		skipHiddenDays(visEnd, -1, true);
  
  		var colCnt = getCellsPerWeek();
  
  		t.start = start;
  		t.end = end;
  		t.visStart = visStart;
  		t.visEnd = visEnd;
  
  		t.title = formatDates(
  			visStart,
  			addDays(cloneDate(visEnd), -1),
  			opt('titleFormat')
  		);
  
  		renderBasic(1, colCnt, false);
  	}
  	
  	
  }
  
  ;;
  
  fcViews.basicDay = BasicDayView;
  
  
  function BasicDayView(element, calendar) {
  	var t = this;
  	
  	
  	// exports
  	t.render = render;
  	
  	
  	// imports
  	BasicView.call(t, element, calendar, 'basicDay');
  	var opt = t.opt;
  	var renderBasic = t.renderBasic;
  	var skipHiddenDays = t.skipHiddenDays;
  	var formatDate = calendar.formatDate;
  	
  	
  	function render(date, delta) {
  
  		if (delta) {
  			addDays(date, delta);
  		}
  		skipHiddenDays(date, delta < 0 ? -1 : 1);
  
  		var start = cloneDate(date, true);
  		var end = addDays(cloneDate(start), 1);
  
  		t.title = formatDate(date, opt('titleFormat'));
  
  		t.start = t.visStart = start;
  		t.end = t.visEnd = end;
  
  		renderBasic(1, 1, false);
  	}
  	
  	
  }
  
  ;;
  
  setDefaults({
  	weekMode: 'fixed'
  });
  
  
  function BasicView(element, calendar, viewName) {
  	var t = this;
  	
  	
  	// exports
  	t.renderBasic = renderBasic;
  	t.setHeight = setHeight;
  	t.setWidth = setWidth;
  	t.renderDayOverlay = renderDayOverlay;
  	t.defaultSelectionEnd = defaultSelectionEnd;
  	t.renderSelection = renderSelection;
  	t.clearSelection = clearSelection;
  	t.reportDayClick = reportDayClick; // for selection (kinda hacky)
  	t.dragStart = dragStart;
  	t.dragStop = dragStop;
  	t.defaultEventEnd = defaultEventEnd;
  	t.getHoverListener = function() { return hoverListener };
  	t.colLeft = colLeft;
  	t.colRight = colRight;
  	t.colContentLeft = colContentLeft;
  	t.colContentRight = colContentRight;
  	t.getIsCellAllDay = function() { return true };
  	t.allDayRow = allDayRow;
  	t.getRowCnt = function() { return rowCnt };
  	t.getColCnt = function() { return colCnt };
  	t.getColWidth = function() { return colWidth };
  	t.getDaySegmentContainer = function() { return daySegmentContainer };
  	
  	
  	// imports
  	View.call(t, element, calendar, viewName);
  	OverlayManager.call(t);
  	SelectionManager.call(t);
  	BasicEventRenderer.call(t);
  	var opt = t.opt;
  	var trigger = t.trigger;
  	var renderOverlay = t.renderOverlay;
  	var clearOverlays = t.clearOverlays;
  	var daySelectionMousedown = t.daySelectionMousedown;
  	var cellToDate = t.cellToDate;
  	var dateToCell = t.dateToCell;
  	var rangeToSegments = t.rangeToSegments;
  	var formatDate = calendar.formatDate;
  	
  	
  	// locals
  	
  	var table;
  	var head;
  	var headCells;
  	var body;
  	var bodyRows;
  	var bodyCells;
  	var bodyFirstCells;
  	var firstRowCellInners;
  	var firstRowCellContentInners;
  	var daySegmentContainer;
  	
  	var viewWidth;
  	var viewHeight;
  	var colWidth;
  	var weekNumberWidth;
  	
  	var rowCnt, colCnt;
  	var showNumbers;
  	var coordinateGrid;
  	var hoverListener;
  	var colPositions;
  	var colContentPositions;
  	
  	var tm;
  	var colFormat;
  	var showWeekNumbers;
  	var weekNumberTitle;
  	var weekNumberFormat;
  	
  	
  	
  	/* Rendering
  	------------------------------------------------------------*/
  	
  	
  	disableTextSelection(element.addClass('fc-grid'));
  	
  	
  	function renderBasic(_rowCnt, _colCnt, _showNumbers) {
  		rowCnt = _rowCnt;
  		colCnt = _colCnt;
  		showNumbers = _showNumbers;
  		updateOptions();
  
  		if (!body) {
  			buildEventContainer();
  		}
  
  		buildTable();
  	}
  	
  	
  	function updateOptions() {
  		tm = opt('theme') ? 'ui' : 'fc';
  		colFormat = opt('columnFormat');
  
  		// week # options. (TODO: bad, logic also in other views)
  		showWeekNumbers = opt('weekNumbers');
  		weekNumberTitle = opt('weekNumberTitle');
  		if (opt('weekNumberCalculation') != 'iso') {
  			weekNumberFormat = "w";
  		}
  		else {
  			weekNumberFormat = "W";
  		}
  	}
  	
  	
  	function buildEventContainer() {
  		daySegmentContainer =
  			$("<div class='fc-event-container' style='position:absolute;z-index:1;top:0;left:0'/>")
  				.appendTo(element);
  	}
  	
  	
  	function buildTable() {
  		var html = buildTableHTML();
  
  		if (table) {
  			table.remove();
  		}
  		table = $(html).appendTo(element);
  
  		head = table.find('thead');
  		headCells = head.find('.fc-day-header');
  		body = table.find('tbody');
  		bodyRows = body.find('tr');
  		bodyCells = body.find('.fc-day');
  		bodyFirstCells = bodyRows.find('td:first-child');
  
  		firstRowCellInners = bodyRows.eq(0).find('.fc-day > div');
  		firstRowCellContentInners = bodyRows.eq(0).find('.fc-day-content > div');
  		
  		markFirstLast(head.add(head.find('tr'))); // marks first+last tr/th's
  		markFirstLast(bodyRows); // marks first+last td's
  		bodyRows.eq(0).addClass('fc-first');
  		bodyRows.filter(':last').addClass('fc-last');
  
  		bodyCells.each(function(i, _cell) {
  			var date = cellToDate(
  				Math.floor(i / colCnt),
  				i % colCnt
  			);
  			trigger('dayRender', t, date, $(_cell));
  		});
  
  		dayBind(bodyCells);
  	}
  
  
  
  	/* HTML Building
  	-----------------------------------------------------------*/
  
  
  	function buildTableHTML() {
  		var html =
  			"<table class='fc-border-separate' style='width:100%' cellspacing='0'>" +
  			buildHeadHTML() +
  			buildBodyHTML() +
  			"</table>";
  
  		return html;
  	}
  
  
  	function buildHeadHTML() {
  		var headerClass = tm + "-widget-header";
  		var html = '';
  		var col;
  		var date;
  
  		html += "<thead><tr>";
  
  		if (showWeekNumbers) {
  			html +=
  				"<th class='fc-week-number " + headerClass + "'>" +
  				htmlEscape(weekNumberTitle) +
  				"</th>";
  		}
  
  		for (col=0; col<colCnt; col++) {
  			date = cellToDate(0, col);
  			html +=
  				"<th class='fc-day-header fc-" + dayIDs[date.getDay()] + " " + headerClass + "'>" +
  				htmlEscape(formatDate(date, colFormat)) +
  				"</th>";
  		}
  
  		html += "</tr></thead>";
  
  		return html;
  	}
  
  
  	function buildBodyHTML() {
  		var contentClass = tm + "-widget-content";
  		var html = '';
  		var row;
  		var col;
  		var date;
  
  		html += "<tbody>";
  
  		for (row=0; row<rowCnt; row++) {
  
  			html += "<tr class='fc-week'>";
  
  			if (showWeekNumbers) {
  				date = cellToDate(row, 0);
  				html +=
  					"<td class='fc-week-number " + contentClass + "'>" +
  					"<div>" +
  					htmlEscape(formatDate(date, weekNumberFormat)) +
  					"</div>" +
  					"</td>";
  			}
  
  			for (col=0; col<colCnt; col++) {
  				date = cellToDate(row, col);
  				html += buildCellHTML(date);
  			}
  
  			html += "</tr>";
  		}
  
  		html += "</tbody>";
  
  		return html;
  	}
  
  
  	function buildCellHTML(date) {
  		var contentClass = tm + "-widget-content";
  		var month = t.start.getMonth();
  		var today = clearTime(new Date());
  		var html = '';
  		var classNames = [
  			'fc-day',
  			'fc-' + dayIDs[date.getDay()],
  			contentClass
  		];
  
  		if (date.getMonth() != month) {
  			classNames.push('fc-other-month');
  		}
  		if (+date == +today) {
  			classNames.push(
  				'fc-today',
  				tm + '-state-highlight'
  			);
  		}
  		else if (date < today) {
  			classNames.push('fc-past');
  		}
  		else {
  			classNames.push('fc-future');
  		}
  
  		html +=
  			"<td" +
  			" class='" + classNames.join(' ') + "'" +
  			" data-date='" + formatDate(date, 'yyyy-MM-dd') + "'" +
  			">" +
  			"<div>";
  
  		if (showNumbers) {
  			html += "<div class='fc-day-number'>" + date.getDate() + "</div>";
  		}
  
  		html +=
  			"<div class='fc-day-content'>" +
  			"<div style='position:relative'>&nbsp;</div>" +
  			"</div>" +
  			"</div>" +
  			"</td>";
  
  		return html;
  	}
  
  
  
  	/* Dimensions
  	-----------------------------------------------------------*/
  	
  	
  	function setHeight(height) {
  		viewHeight = height;
  		
  		var bodyHeight = viewHeight - head.height();
  		var rowHeight;
  		var rowHeightLast;
  		var cell;
  			
  		if (opt('weekMode') == 'variable') {
  			rowHeight = rowHeightLast = Math.floor(bodyHeight / (rowCnt==1 ? 2 : 6));
  		}else{
  			rowHeight = Math.floor(bodyHeight / rowCnt);
  			rowHeightLast = bodyHeight - rowHeight * (rowCnt-1);
  		}
  		
  		bodyFirstCells.each(function(i, _cell) {
  			if (i < rowCnt) {
  				cell = $(_cell);
  				cell.find('> div').css(
  					'min-height',
  					(i==rowCnt-1 ? rowHeightLast : rowHeight) - vsides(cell)
  				);
  			}
  		});
  		
  	}
  	
  	
  	function setWidth(width) {
  		viewWidth = width;
  		colPositions.clear();
  		colContentPositions.clear();
  
  		weekNumberWidth = 0;
  		if (showWeekNumbers) {
  			weekNumberWidth = head.find('th.fc-week-number').outerWidth();
  		}
  
  		colWidth = Math.floor((viewWidth - weekNumberWidth) / colCnt);
  		setOuterWidth(headCells.slice(0, -1), colWidth);
  	}
  	
  	
  	
  	/* Day clicking and binding
  	-----------------------------------------------------------*/
  	
  	
  	function dayBind(days) {
  		days.click(dayClick)
  			.mousedown(daySelectionMousedown);
  	}
  	
  	
  	function dayClick(ev) {
  		if (!opt('selectable')) { // if selectable, SelectionManager will worry about dayClick
  			var date = parseISO8601($(this).data('date'));
  			trigger('dayClick', this, date, true, ev);
  		}
  	}
  	
  	
  	
  	/* Semi-transparent Overlay Helpers
  	------------------------------------------------------*/
  	// TODO: should be consolidated with AgendaView's methods
  
  
  	function renderDayOverlay(overlayStart, overlayEnd, refreshCoordinateGrid) { // overlayEnd is exclusive
  
  		if (refreshCoordinateGrid) {
  			coordinateGrid.build();
  		}
  
  		var segments = rangeToSegments(overlayStart, overlayEnd);
  
  		for (var i=0; i<segments.length; i++) {
  			var segment = segments[i];
  			dayBind(
  				renderCellOverlay(
  					segment.row,
  					segment.leftCol,
  					segment.row,
  					segment.rightCol
  				)
  			);
  		}
  	}
  
  	
  	function renderCellOverlay(row0, col0, row1, col1) { // row1,col1 is inclusive
  		var rect = coordinateGrid.rect(row0, col0, row1, col1, element);
  		return renderOverlay(rect, element);
  	}
  	
  	
  	
  	/* Selection
  	-----------------------------------------------------------------------*/
  	
  	
  	function defaultSelectionEnd(startDate, allDay) {
  		return cloneDate(startDate);
  	}
  	
  	
  	function renderSelection(startDate, endDate, allDay) {
  		renderDayOverlay(startDate, addDays(cloneDate(endDate), 1), true); // rebuild every time???
  	}
  	
  	
  	function clearSelection() {
  		clearOverlays();
  	}
  	
  	
  	function reportDayClick(date, allDay, ev) {
  		var cell = dateToCell(date);
  		var _element = bodyCells[cell.row*colCnt + cell.col];
  		trigger('dayClick', _element, date, allDay, ev);
  	}
  	
  	
  	
  	/* External Dragging
  	-----------------------------------------------------------------------*/
  	
  	
  	function dragStart(_dragElement, ev, ui) {
  		hoverListener.start(function(cell) {
  			clearOverlays();
  			if (cell) {
  				renderCellOverlay(cell.row, cell.col, cell.row, cell.col);
  			}
  		}, ev);
  	}
  	
  	
  	function dragStop(_dragElement, ev, ui) {
  		var cell = hoverListener.stop();
  		clearOverlays();
  		if (cell) {
  			var d = cellToDate(cell);
  			trigger('drop', _dragElement, d, true, ev, ui);
  		}
  	}
  	
  	
  	
  	/* Utilities
  	--------------------------------------------------------*/
  	
  	
  	function defaultEventEnd(event) {
  		return cloneDate(event.start);
  	}
  	
  	
  	coordinateGrid = new CoordinateGrid(function(rows, cols) {
  		var e, n, p;
  		headCells.each(function(i, _e) {
  			e = $(_e);
  			n = e.offset().left;
  			if (i) {
  				p[1] = n;
  			}
  			p = [n];
  			cols[i] = p;
  		});
  		p[1] = n + e.outerWidth();
  		bodyRows.each(function(i, _e) {
  			if (i < rowCnt) {
  				e = $(_e);
  				n = e.offset().top;
  				if (i) {
  					p[1] = n;
  				}
  				p = [n];
  				rows[i] = p;
  			}
  		});
  		p[1] = n + e.outerHeight();
  	});
  	
  	
  	hoverListener = new HoverListener(coordinateGrid);
  	
  	colPositions = new HorizontalPositionCache(function(col) {
  		return firstRowCellInners.eq(col);
  	});
  
  	colContentPositions = new HorizontalPositionCache(function(col) {
  		return firstRowCellContentInners.eq(col);
  	});
  
  
  	function colLeft(col) {
  		return colPositions.left(col);
  	}
  
  
  	function colRight(col) {
  		return colPositions.right(col);
  	}
  	
  	
  	function colContentLeft(col) {
  		return colContentPositions.left(col);
  	}
  	
  	
  	function colContentRight(col) {
  		return colContentPositions.right(col);
  	}
  	
  	
  	function allDayRow(i) {
  		return bodyRows.eq(i);
  	}
  	
  }
  
  ;;
  
  function BasicEventRenderer() {
  	var t = this;
  	
  	
  	// exports
  	t.renderEvents = renderEvents;
  	t.clearEvents = clearEvents;
  	
  
  	// imports
  	DayEventRenderer.call(t);
  
  	
  	function renderEvents(events, modifiedEventId) {
  		t.renderDayEvents(events, modifiedEventId);
  	}
  	
  	
  	function clearEvents() {
  		t.getDaySegmentContainer().empty();
  	}
  
  
  	// TODO: have this class (and AgendaEventRenderer) be responsible for creating the event container div
  
  }
  
  ;;
  
  fcViews.agendaWeek = AgendaWeekView;
  
  function AgendaWeekView(element, calendar) {
  	var t = this;
  	
  	
  	// exports
  	t.render = render;
  	
  	
  	// imports
  	AgendaView.call(t, element, calendar, 'agendaWeek');
  	var opt = t.opt;
  	var renderAgenda = t.renderAgenda;
  	var skipHiddenDays = t.skipHiddenDays;
  	var getCellsPerWeek = t.getCellsPerWeek;
  	var formatDates = calendar.formatDates;
  
  	
  	function render(date, delta) {
  
  		if (delta) {
  			addDays(date, delta * 7);
  		}
  
  		var start = addDays(cloneDate(date), -((date.getDay() - opt('firstDay') + 7) % 7));
  		var end = addDays(cloneDate(start), 7);
  
  		var visStart = cloneDate(start);
  		skipHiddenDays(visStart);
  
  		var visEnd = cloneDate(end);
  		skipHiddenDays(visEnd, -1, true);
  
  		var colCnt = getCellsPerWeek();
  
  		t.title = formatDates(
  			visStart,
  			addDays(cloneDate(visEnd), -1),
  			opt('titleFormat')
  		);
  
  		t.start = start;
  		t.end = end;
  		t.visStart = visStart;
  		t.visEnd = visEnd;
  
  		renderAgenda(colCnt);
  	}
  
  }
  
  ;;
  
  fcViews.agendaDay = AgendaDayView;
  
  
  function AgendaDayView(element, calendar) {
  	var t = this;
  	
  	
  	// exports
  	t.render = render;
  	
  	
  	// imports
  	AgendaView.call(t, element, calendar, 'agendaDay');
  	var opt = t.opt;
  	var renderAgenda = t.renderAgenda;
  	var skipHiddenDays = t.skipHiddenDays;
  	var formatDate = calendar.formatDate;
  	
  	
  	function render(date, delta) {
  
  		if (delta) {
  			addDays(date, delta);
  		}
  		skipHiddenDays(date, delta < 0 ? -1 : 1);
  
  		var start = cloneDate(date, true);
  		var end = addDays(cloneDate(start), 1);
  
  		t.title = formatDate(date, opt('titleFormat'));
  
  		t.start = t.visStart = start;
  		t.end = t.visEnd = end;
  
  		renderAgenda(1);
  	}
  	
  
  }
  
  ;;
  
  setDefaults({
  	allDaySlot: true,
  	allDayText: 'all-day',
  	firstHour: 6,
  	slotMinutes: 30,
  	defaultEventMinutes: 120,
  	axisFormat: 'h(:mm)tt',
  	timeFormat: {
  		agenda: 'h:mm{ - h:mm}'
  	},
  	dragOpacity: {
  		agenda: .5
  	},
  	minTime: 0,
  	maxTime: 24,
  	slotEventOverlap: true
  });
  
  
  // TODO: make it work in quirks mode (event corners, all-day height)
  // TODO: test liquid width, especially in IE6
  
  
  function AgendaView(element, calendar, viewName) {
  	var t = this;
  	
  	
  	// exports
  	t.renderAgenda = renderAgenda;
  	t.setWidth = setWidth;
  	t.setHeight = setHeight;
  	t.afterRender = afterRender;
  	t.defaultEventEnd = defaultEventEnd;
  	t.timePosition = timePosition;
  	t.getIsCellAllDay = getIsCellAllDay;
  	t.allDayRow = getAllDayRow;
  	t.getCoordinateGrid = function() { return coordinateGrid }; // specifically for AgendaEventRenderer
  	t.getHoverListener = function() { return hoverListener };
  	t.colLeft = colLeft;
  	t.colRight = colRight;
  	t.colContentLeft = colContentLeft;
  	t.colContentRight = colContentRight;
  	t.getDaySegmentContainer = function() { return daySegmentContainer };
  	t.getSlotSegmentContainer = function() { return slotSegmentContainer };
  	t.getMinMinute = function() { return minMinute };
  	t.getMaxMinute = function() { return maxMinute };
  	t.getSlotContainer = function() { return slotContainer };
  	t.getRowCnt = function() { return 1 };
  	t.getColCnt = function() { return colCnt };
  	t.getColWidth = function() { return colWidth };
  	t.getSnapHeight = function() { return snapHeight };
  	t.getSnapMinutes = function() { return snapMinutes };
  	t.defaultSelectionEnd = defaultSelectionEnd;
  	t.renderDayOverlay = renderDayOverlay;
  	t.renderSelection = renderSelection;
  	t.clearSelection = clearSelection;
  	t.reportDayClick = reportDayClick; // selection mousedown hack
  	t.dragStart = dragStart;
  	t.dragStop = dragStop;
  	
  	
  	// imports
  	View.call(t, element, calendar, viewName);
  	OverlayManager.call(t);
  	SelectionManager.call(t);
  	AgendaEventRenderer.call(t);
  	var opt = t.opt;
  	var trigger = t.trigger;
  	var renderOverlay = t.renderOverlay;
  	var clearOverlays = t.clearOverlays;
  	var reportSelection = t.reportSelection;
  	var unselect = t.unselect;
  	var daySelectionMousedown = t.daySelectionMousedown;
  	var slotSegHtml = t.slotSegHtml;
  	var cellToDate = t.cellToDate;
  	var dateToCell = t.dateToCell;
  	var rangeToSegments = t.rangeToSegments;
  	var formatDate = calendar.formatDate;
  	
  	
  	// locals
  	
  	var dayTable;
  	var dayHead;
  	var dayHeadCells;
  	var dayBody;
  	var dayBodyCells;
  	var dayBodyCellInners;
  	var dayBodyCellContentInners;
  	var dayBodyFirstCell;
  	var dayBodyFirstCellStretcher;
  	var slotLayer;
  	var daySegmentContainer;
  	var allDayTable;
  	var allDayRow;
  	var slotScroller;
  	var slotContainer;
  	var slotSegmentContainer;
  	var slotTable;
  	var selectionHelper;
  	
  	var viewWidth;
  	var viewHeight;
  	var axisWidth;
  	var colWidth;
  	var gutterWidth;
  	var slotHeight; // TODO: what if slotHeight changes? (see issue 650)
  
  	var snapMinutes;
  	var snapRatio; // ratio of number of "selection" slots to normal slots. (ex: 1, 2, 4)
  	var snapHeight; // holds the pixel hight of a "selection" slot
  	
  	var colCnt;
  	var slotCnt;
  	var coordinateGrid;
  	var hoverListener;
  	var colPositions;
  	var colContentPositions;
  	var slotTopCache = {};
  	
  	var tm;
  	var rtl;
  	var minMinute, maxMinute;
  	var colFormat;
  	var showWeekNumbers;
  	var weekNumberTitle;
  	var weekNumberFormat;
  	
  
  	
  	/* Rendering
  	-----------------------------------------------------------------------------*/
  	
  	
  	disableTextSelection(element.addClass('fc-agenda'));
  	
  	
  	function renderAgenda(c) {
  		colCnt = c;
  		updateOptions();
  
  		if (!dayTable) { // first time rendering?
  			buildSkeleton(); // builds day table, slot area, events containers
  		}
  		else {
  			buildDayTable(); // rebuilds day table
  		}
  	}
  	
  	
  	function updateOptions() {
  
  		tm = opt('theme') ? 'ui' : 'fc';
  		rtl = opt('isRTL')
  		minMinute = parseTime(opt('minTime'));
  		maxMinute = parseTime(opt('maxTime'));
  		colFormat = opt('columnFormat');
  
  		// week # options. (TODO: bad, logic also in other views)
  		showWeekNumbers = opt('weekNumbers');
  		weekNumberTitle = opt('weekNumberTitle');
  		if (opt('weekNumberCalculation') != 'iso') {
  			weekNumberFormat = "w";
  		}
  		else {
  			weekNumberFormat = "W";
  		}
  
  		snapMinutes = opt('snapMinutes') || opt('slotMinutes');
  	}
  
  
  
  	/* Build DOM
  	-----------------------------------------------------------------------*/
  
  
  	function buildSkeleton() {
  		var headerClass = tm + "-widget-header";
  		var contentClass = tm + "-widget-content";
  		var s;
  		var d;
  		var i;
  		var maxd;
  		var minutes;
  		var slotNormal = opt('slotMinutes') % 15 == 0;
  		
  		buildDayTable();
  		
  		slotLayer =
  			$("<div style='position:absolute;z-index:2;left:0;width:100%'/>")
  				.appendTo(element);
  				
  		if (opt('allDaySlot')) {
  		
  			daySegmentContainer =
  				$("<div class='fc-event-container' style='position:absolute;z-index:1;top:0;left:0'/>")
  					.appendTo(slotLayer);
  		
  			s =
  				"<table style='width:100%' class='fc-agenda-allday' cellspacing='0'>" +
  				"<tr>" +
  				"<th class='" + headerClass + " fc-agenda-axis'>" + opt('allDayText') + "</th>" +
  				"<td>" +
  				"<div class='fc-day-content'><div style='position:relative'/></div>" +
  				"</td>" +
  				"<th class='" + headerClass + " fc-agenda-gutter'>&nbsp;</th>" +
  				"</tr>" +
  				"</table>";
  			allDayTable = $(s).appendTo(slotLayer);
  			allDayRow = allDayTable.find('tr');
  			
  			dayBind(allDayRow.find('td'));
  			
  			slotLayer.append(
  				"<div class='fc-agenda-divider " + headerClass + "'>" +
  				"<div class='fc-agenda-divider-inner'/>" +
  				"</div>"
  			);
  			
  		}else{
  		
  			daySegmentContainer = $([]); // in jQuery 1.4, we can just do $()
  		
  		}
  		
  		slotScroller =
  			$("<div style='position:absolute;width:100%;overflow-x:hidden;overflow-y:auto'/>")
  				.appendTo(slotLayer);
  				
  		slotContainer =
  			$("<div style='position:relative;width:100%;overflow:hidden'/>")
  				.appendTo(slotScroller);
  				
  		slotSegmentContainer =
  			$("<div class='fc-event-container' style='position:absolute;z-index:1;top:0;left:0'/>")
  				.appendTo(slotContainer);
  		
  		s =
  			"<table class='fc-agenda-slots' style='width:100%' cellspacing='0'>" +
  			"<tbody>";
  		d = zeroDate();
  		maxd = addMinutes(cloneDate(d), maxMinute);
  		addMinutes(d, minMinute);
  		slotCnt = 0;
  		for (i=0; d < maxd; i++) {
  			minutes = d.getMinutes();
  			s +=
  				"<tr class='fc-slot" + i + ' ' + (!minutes ? '' : 'fc-minor') + "'>" +
  				"<th class='fc-agenda-axis " + headerClass + "'>" +
  				((!slotNormal || !minutes) ? formatDate(d, opt('axisFormat')) : '&nbsp;') +
  				"</th>" +
  				"<td class='" + contentClass + "'>" +
  				"<div style='position:relative'>&nbsp;</div>" +
  				"</td>" +
  				"</tr>";
  			addMinutes(d, opt('slotMinutes'));
  			slotCnt++;
  		}
  		s +=
  			"</tbody>" +
  			"</table>";
  		slotTable = $(s).appendTo(slotContainer);
  		
  		slotBind(slotTable.find('td'));
  	}
  
  
  
  	/* Build Day Table
  	-----------------------------------------------------------------------*/
  
  
  	function buildDayTable() {
  		var html = buildDayTableHTML();
  
  		if (dayTable) {
  			dayTable.remove();
  		}
  		dayTable = $(html).appendTo(element);
  
  		dayHead = dayTable.find('thead');
  		dayHeadCells = dayHead.find('th').slice(1, -1); // exclude gutter
  		dayBody = dayTable.find('tbody');
  		dayBodyCells = dayBody.find('td').slice(0, -1); // exclude gutter
  		dayBodyCellInners = dayBodyCells.find('> div');
  		dayBodyCellContentInners = dayBodyCells.find('.fc-day-content > div');
  
  		dayBodyFirstCell = dayBodyCells.eq(0);
  		dayBodyFirstCellStretcher = dayBodyCellInners.eq(0);
  		
  		markFirstLast(dayHead.add(dayHead.find('tr')));
  		markFirstLast(dayBody.add(dayBody.find('tr')));
  
  		// TODO: now that we rebuild the cells every time, we should call dayRender
  	}
  
  
  	function buildDayTableHTML() {
  		var html =
  			"<table style='width:100%' class='fc-agenda-days fc-border-separate' cellspacing='0'>" +
  			buildDayTableHeadHTML() +
  			buildDayTableBodyHTML() +
  			"</table>";
  
  		return html;
  	}
  
  
  	function buildDayTableHeadHTML() {
  		var headerClass = tm + "-widget-header";
  		var date;
  		var html = '';
  		var weekText;
  		var col;
  
  		html +=
  			"<thead>" +
  			"<tr>";
  
  		if (showWeekNumbers) {
  			date = cellToDate(0, 0);
  			weekText = formatDate(date, weekNumberFormat);
  			if (rtl) {
  				weekText += weekNumberTitle;
  			}
  			else {
  				weekText = weekNumberTitle + weekText;
  			}
  			html +=
  				"<th class='fc-agenda-axis fc-week-number " + headerClass + "'>" +
  				htmlEscape(weekText) +
  				"</th>";
  		}
  		else {
  			html += "<th class='fc-agenda-axis " + headerClass + "'>&nbsp;</th>";
  		}
  
  		for (col=0; col<colCnt; col++) {
  			date = cellToDate(0, col);
  			html +=
  				"<th class='fc-" + dayIDs[date.getDay()] + " fc-col" + col + ' ' + headerClass + "'>" +
  				htmlEscape(formatDate(date, colFormat)) +
  				"</th>";
  		}
  
  		html +=
  			"<th class='fc-agenda-gutter " + headerClass + "'>&nbsp;</th>" +
  			"</tr>" +
  			"</thead>";
  
  		return html;
  	}
  
  
  	function buildDayTableBodyHTML() {
  		var headerClass = tm + "-widget-header"; // TODO: make these when updateOptions() called
  		var contentClass = tm + "-widget-content";
  		var date;
  		var today = clearTime(new Date());
  		var col;
  		var cellsHTML;
  		var cellHTML;
  		var classNames;
  		var html = '';
  
  		html +=
  			"<tbody>" +
  			"<tr>" +
  			"<th class='fc-agenda-axis " + headerClass + "'>&nbsp;</th>";
  
  		cellsHTML = '';
  
  		for (col=0; col<colCnt; col++) {
  
  			date = cellToDate(0, col);
  
  			classNames = [
  				'fc-col' + col,
  				'fc-' + dayIDs[date.getDay()],
  				contentClass
  			];
  			if (+date == +today) {
  				classNames.push(
  					tm + '-state-highlight',
  					'fc-today'
  				);
  			}
  			else if (date < today) {
  				classNames.push('fc-past');
  			}
  			else {
  				classNames.push('fc-future');
  			}
  
  			cellHTML =
  				"<td class='" + classNames.join(' ') + "'>" +
  				"<div>" +
  				"<div class='fc-day-content'>" +
  				"<div style='position:relative'>&nbsp;</div>" +
  				"</div>" +
  				"</div>" +
  				"</td>";
  
  			cellsHTML += cellHTML;
  		}
  
  		html += cellsHTML;
  		html +=
  			"<td class='fc-agenda-gutter " + contentClass + "'>&nbsp;</td>" +
  			"</tr>" +
  			"</tbody>";
  
  		return html;
  	}
  
  
  	// TODO: data-date on the cells
  
  	
  	
  	/* Dimensions
  	-----------------------------------------------------------------------*/
  
  	
  	function setHeight(height) {
  		if (height === undefined) {
  			height = viewHeight;
  		}
  		viewHeight = height;
  		slotTopCache = {};
  	
  		var headHeight = dayBody.position().top;
  		var allDayHeight = slotScroller.position().top; // including divider
  		var bodyHeight = Math.min( // total body height, including borders
  			height - headHeight,   // when scrollbars
  			slotTable.height() + allDayHeight + 1 // when no scrollbars. +1 for bottom border
  		);
  
  		dayBodyFirstCellStretcher
  			.height(bodyHeight - vsides(dayBodyFirstCell));
  		
  		slotLayer.css('top', headHeight);
  		
  		slotScroller.height(bodyHeight - allDayHeight - 1);
  		
  		// the stylesheet guarantees that the first row has no border.
  		// this allows .height() to work well cross-browser.
  		slotHeight = slotTable.find('tr:first').height() + 1; // +1 for bottom border
  
  		snapRatio = opt('slotMinutes') / snapMinutes;
  		snapHeight = slotHeight / snapRatio;
  	}
  	
  	
  	function setWidth(width) {
  		viewWidth = width;
  		colPositions.clear();
  		colContentPositions.clear();
  
  		var axisFirstCells = dayHead.find('th:first');
  		if (allDayTable) {
  			axisFirstCells = axisFirstCells.add(allDayTable.find('th:first'));
  		}
  		axisFirstCells = axisFirstCells.add(slotTable.find('th:first'));
  		
  		axisWidth = 0;
  		setOuterWidth(
  			axisFirstCells
  				.width('')
  				.each(function(i, _cell) {
  					axisWidth = Math.max(axisWidth, $(_cell).outerWidth());
  				}),
  			axisWidth
  		);
  		
  		var gutterCells = dayTable.find('.fc-agenda-gutter');
  		if (allDayTable) {
  			gutterCells = gutterCells.add(allDayTable.find('th.fc-agenda-gutter'));
  		}
  
  		var slotTableWidth = slotScroller[0].clientWidth; // needs to be done after axisWidth (for IE7)
  		
  		gutterWidth = slotScroller.width() - slotTableWidth;
  		if (gutterWidth) {
  			setOuterWidth(gutterCells, gutterWidth);
  			gutterCells
  				.show()
  				.prev()
  				.removeClass('fc-last');
  		}else{
  			gutterCells
  				.hide()
  				.prev()
  				.addClass('fc-last');
  		}
  		
  		colWidth = Math.floor((slotTableWidth - axisWidth) / colCnt);
  		setOuterWidth(dayHeadCells.slice(0, -1), colWidth);
  	}
  	
  
  
  	/* Scrolling
  	-----------------------------------------------------------------------*/
  
  
  	function resetScroll() {
  		var d0 = zeroDate();
  		var scrollDate = cloneDate(d0);
  		scrollDate.setHours(opt('firstHour'));
  		var top = timePosition(d0, scrollDate) + 1; // +1 for the border
  		function scroll() {
  			slotScroller.scrollTop(top);
  		}
  		scroll();
  		setTimeout(scroll, 0); // overrides any previous scroll state made by the browser
  	}
  
  
  	function afterRender() { // after the view has been freshly rendered and sized
  		resetScroll();
  	}
  	
  	
  	
  	/* Slot/Day clicking and binding
  	-----------------------------------------------------------------------*/
  	
  
  	function dayBind(cells) {
  		cells.click(slotClick)
  			.mousedown(daySelectionMousedown);
  	}
  
  
  	function slotBind(cells) {
  		cells.click(slotClick)
  			.mousedown(slotSelectionMousedown);
  	}
  	
  	
  	function slotClick(ev) {
  		if (!opt('selectable')) { // if selectable, SelectionManager will worry about dayClick
  			var col = Math.min(colCnt-1, Math.floor((ev.pageX - dayTable.offset().left - axisWidth) / colWidth));
  			var date = cellToDate(0, col);
  			var rowMatch = this.parentNode.className.match(/fc-slot(\d+)/); // TODO: maybe use data
  			if (rowMatch) {
  				var mins = parseInt(rowMatch[1]) * opt('slotMinutes');
  				var hours = Math.floor(mins/60);
  				date.setHours(hours);
  				date.setMinutes(mins%60 + minMinute);
  				trigger('dayClick', dayBodyCells[col], date, false, ev);
  			}else{
  				trigger('dayClick', dayBodyCells[col], date, true, ev);
  			}
  		}
  	}
  	
  	
  	
  	/* Semi-transparent Overlay Helpers
  	-----------------------------------------------------*/
  	// TODO: should be consolidated with BasicView's methods
  
  
  	function renderDayOverlay(overlayStart, overlayEnd, refreshCoordinateGrid) { // overlayEnd is exclusive
  
  		if (refreshCoordinateGrid) {
  			coordinateGrid.build();
  		}
  
  		var segments = rangeToSegments(overlayStart, overlayEnd);
  
  		for (var i=0; i<segments.length; i++) {
  			var segment = segments[i];
  			dayBind(
  				renderCellOverlay(
  					segment.row,
  					segment.leftCol,
  					segment.row,
  					segment.rightCol
  				)
  			);
  		}
  	}
  	
  	
  	function renderCellOverlay(row0, col0, row1, col1) { // only for all-day?
  		var rect = coordinateGrid.rect(row0, col0, row1, col1, slotLayer);
  		return renderOverlay(rect, slotLayer);
  	}
  	
  
  	function renderSlotOverlay(overlayStart, overlayEnd) {
  		for (var i=0; i<colCnt; i++) {
  			var dayStart = cellToDate(0, i);
  			var dayEnd = addDays(cloneDate(dayStart), 1);
  			var stretchStart = new Date(Math.max(dayStart, overlayStart));
  			var stretchEnd = new Date(Math.min(dayEnd, overlayEnd));
  			if (stretchStart < stretchEnd) {
  				var rect = coordinateGrid.rect(0, i, 0, i, slotContainer); // only use it for horizontal coords
  				var top = timePosition(dayStart, stretchStart);
  				var bottom = timePosition(dayStart, stretchEnd);
  				rect.top = top;
  				rect.height = bottom - top;
  				slotBind(
  					renderOverlay(rect, slotContainer)
  				);
  			}
  		}
  	}
  	
  	
  	
  	/* Coordinate Utilities
  	-----------------------------------------------------------------------------*/
  	
  	
  	coordinateGrid = new CoordinateGrid(function(rows, cols) {
  		var e, n, p;
  		dayHeadCells.each(function(i, _e) {
  			e = $(_e);
  			n = e.offset().left;
  			if (i) {
  				p[1] = n;
  			}
  			p = [n];
  			cols[i] = p;
  		});
  		p[1] = n + e.outerWidth();
  		if (opt('allDaySlot')) {
  			e = allDayRow;
  			n = e.offset().top;
  			rows[0] = [n, n+e.outerHeight()];
  		}
  		var slotTableTop = slotContainer.offset().top;
  		var slotScrollerTop = slotScroller.offset().top;
  		var slotScrollerBottom = slotScrollerTop + slotScroller.outerHeight();
  		function constrain(n) {
  			return Math.max(slotScrollerTop, Math.min(slotScrollerBottom, n));
  		}
  		for (var i=0; i<slotCnt*snapRatio; i++) { // adapt slot count to increased/decreased selection slot count
  			rows.push([
  				constrain(slotTableTop + snapHeight*i),
  				constrain(slotTableTop + snapHeight*(i+1))
  			]);
  		}
  	});
  	
  	
  	hoverListener = new HoverListener(coordinateGrid);
  	
  	colPositions = new HorizontalPositionCache(function(col) {
  		return dayBodyCellInners.eq(col);
  	});
  	
  	colContentPositions = new HorizontalPositionCache(function(col) {
  		return dayBodyCellContentInners.eq(col);
  	});
  	
  	
  	function colLeft(col) {
  		return colPositions.left(col);
  	}
  
  
  	function colContentLeft(col) {
  		return colContentPositions.left(col);
  	}
  
  
  	function colRight(col) {
  		return colPositions.right(col);
  	}
  	
  	
  	function colContentRight(col) {
  		return colContentPositions.right(col);
  	}
  
  
  	function getIsCellAllDay(cell) {
  		return opt('allDaySlot') && !cell.row;
  	}
  
  
  	function realCellToDate(cell) { // ugh "real" ... but blame it on our abuse of the "cell" system
  		var d = cellToDate(0, cell.col);
  		var slotIndex = cell.row;
  		if (opt('allDaySlot')) {
  			slotIndex--;
  		}
  		if (slotIndex >= 0) {
  			addMinutes(d, minMinute + slotIndex * snapMinutes);
  		}
  		return d;
  	}
  	
  	
  	// get the Y coordinate of the given time on the given day (both Date objects)
  	function timePosition(day, time) { // both date objects. day holds 00:00 of current day
  		day = cloneDate(day, true);
  		if (time < addMinutes(cloneDate(day), minMinute)) {
  			return 0;
  		}
  		if (time >= addMinutes(cloneDate(day), maxMinute)) {
  			return slotTable.height();
  		}
  		var slotMinutes = opt('slotMinutes'),
  			minutes = time.getHours()*60 + time.getMinutes() - minMinute,
  			slotI = Math.floor(minutes / slotMinutes),
  			slotTop = slotTopCache[slotI];
  		if (slotTop === undefined) {
  			slotTop = slotTopCache[slotI] =
  				slotTable.find('tr').eq(slotI).find('td div')[0].offsetTop;
  				// .eq() is faster than ":eq()" selector
  				// [0].offsetTop is faster than .position().top (do we really need this optimization?)
  				// a better optimization would be to cache all these divs
  		}
  		return Math.max(0, Math.round(
  			slotTop - 1 + slotHeight * ((minutes % slotMinutes) / slotMinutes)
  		));
  	}
  	
  	
  	function getAllDayRow(index) {
  		return allDayRow;
  	}
  	
  	
  	function defaultEventEnd(event) {
  		var start = cloneDate(event.start);
  		if (event.allDay) {
  			return start;
  		}
  		return addMinutes(start, opt('defaultEventMinutes'));
  	}
  	
  	
  	
  	/* Selection
  	---------------------------------------------------------------------------------*/
  	
  	
  	function defaultSelectionEnd(startDate, allDay) {
  		if (allDay) {
  			return cloneDate(startDate);
  		}
  		return addMinutes(cloneDate(startDate), opt('slotMinutes'));
  	}
  	
  	
  	function renderSelection(startDate, endDate, allDay) { // only for all-day
  		if (allDay) {
  			if (opt('allDaySlot')) {
  				renderDayOverlay(startDate, addDays(cloneDate(endDate), 1), true);
  			}
  		}else{
  			renderSlotSelection(startDate, endDate);
  		}
  	}
  	
  	
  	function renderSlotSelection(startDate, endDate) {
  		var helperOption = opt('selectHelper');
  		coordinateGrid.build();
  		if (helperOption) {
  			var col = dateToCell(startDate).col;
  			if (col >= 0 && col < colCnt) { // only works when times are on same day
  				var rect = coordinateGrid.rect(0, col, 0, col, slotContainer); // only for horizontal coords
  				var top = timePosition(startDate, startDate);
  				var bottom = timePosition(startDate, endDate);
  				if (bottom > top) { // protect against selections that are entirely before or after visible range
  					rect.top = top;
  					rect.height = bottom - top;
  					rect.left += 2;
  					rect.width -= 5;
  					if ($.isFunction(helperOption)) {
  						var helperRes = helperOption(startDate, endDate);
  						if (helperRes) {
  							rect.position = 'absolute';
  							selectionHelper = $(helperRes)
  								.css(rect)
  								.appendTo(slotContainer);
  						}
  					}else{
  						rect.isStart = true; // conside rect a "seg" now
  						rect.isEnd = true;   //
  						selectionHelper = $(slotSegHtml(
  							{
  								title: '',
  								start: startDate,
  								end: endDate,
  								className: ['fc-select-helper'],
  								editable: false
  							},
  							rect
  						));
  						selectionHelper.css('opacity', opt('dragOpacity'));
  					}
  					if (selectionHelper) {
  						slotBind(selectionHelper);
  						slotContainer.append(selectionHelper);
  						setOuterWidth(selectionHelper, rect.width, true); // needs to be after appended
  						setOuterHeight(selectionHelper, rect.height, true);
  					}
  				}
  			}
  		}else{
  			renderSlotOverlay(startDate, endDate);
  		}
  	}
  	
  	
  	function clearSelection() {
  		clearOverlays();
  		if (selectionHelper) {
  			selectionHelper.remove();
  			selectionHelper = null;
  		}
  	}
  	
  	
  	function slotSelectionMousedown(ev) {
  		if (ev.which == 1 && opt('selectable')) { // ev.which==1 means left mouse button
  			unselect(ev);
  			var dates;
  			hoverListener.start(function(cell, origCell) {
  				clearSelection();
  				if (cell && cell.col == origCell.col && !getIsCellAllDay(cell)) {
  					var d1 = realCellToDate(origCell);
  					var d2 = realCellToDate(cell);
  					dates = [
  						d1,
  						addMinutes(cloneDate(d1), snapMinutes), // calculate minutes depending on selection slot minutes 
  						d2,
  						addMinutes(cloneDate(d2), snapMinutes)
  					].sort(dateCompare);
  					renderSlotSelection(dates[0], dates[3]);
  				}else{
  					dates = null;
  				}
  			}, ev);
  			$(document).one('mouseup', function(ev) {
  				hoverListener.stop();
  				if (dates) {
  					if (+dates[0] == +dates[1]) {
  						reportDayClick(dates[0], false, ev);
  					}
  					reportSelection(dates[0], dates[3], false, ev);
  				}
  			});
  		}
  	}
  
  
  	function reportDayClick(date, allDay, ev) {
  		trigger('dayClick', dayBodyCells[dateToCell(date).col], date, allDay, ev);
  	}
  	
  	
  	
  	/* External Dragging
  	--------------------------------------------------------------------------------*/
  	
  	
  	function dragStart(_dragElement, ev, ui) {
  		hoverListener.start(function(cell) {
  			clearOverlays();
  			if (cell) {
  				if (getIsCellAllDay(cell)) {
  					renderCellOverlay(cell.row, cell.col, cell.row, cell.col);
  				}else{
  					var d1 = realCellToDate(cell);
  					var d2 = addMinutes(cloneDate(d1), opt('defaultEventMinutes'));
  					renderSlotOverlay(d1, d2);
  				}
  			}
  		}, ev);
  	}
  	
  	
  	function dragStop(_dragElement, ev, ui) {
  		var cell = hoverListener.stop();
  		clearOverlays();
  		if (cell) {
  			trigger('drop', _dragElement, realCellToDate(cell), getIsCellAllDay(cell), ev, ui);
  		}
  	}
  	
  
  }
  
  ;;
  
  function AgendaEventRenderer() {
  	var t = this;
  	
  	
  	// exports
  	t.renderEvents = renderEvents;
  	t.clearEvents = clearEvents;
  	t.slotSegHtml = slotSegHtml;
  	
  	
  	// imports
  	DayEventRenderer.call(t);
  	var opt = t.opt;
  	var trigger = t.trigger;
  	var isEventDraggable = t.isEventDraggable;
  	var isEventResizable = t.isEventResizable;
  	var eventEnd = t.eventEnd;
  	var eventElementHandlers = t.eventElementHandlers;
  	var setHeight = t.setHeight;
  	var getDaySegmentContainer = t.getDaySegmentContainer;
  	var getSlotSegmentContainer = t.getSlotSegmentContainer;
  	var getHoverListener = t.getHoverListener;
  	var getMaxMinute = t.getMaxMinute;
  	var getMinMinute = t.getMinMinute;
  	var timePosition = t.timePosition;
  	var getIsCellAllDay = t.getIsCellAllDay;
  	var colContentLeft = t.colContentLeft;
  	var colContentRight = t.colContentRight;
  	var cellToDate = t.cellToDate;
  	var getColCnt = t.getColCnt;
  	var getColWidth = t.getColWidth;
  	var getSnapHeight = t.getSnapHeight;
  	var getSnapMinutes = t.getSnapMinutes;
  	var getSlotContainer = t.getSlotContainer;
  	var reportEventElement = t.reportEventElement;
  	var showEvents = t.showEvents;
  	var hideEvents = t.hideEvents;
  	var eventDrop = t.eventDrop;
  	var eventResize = t.eventResize;
  	var renderDayOverlay = t.renderDayOverlay;
  	var clearOverlays = t.clearOverlays;
  	var renderDayEvents = t.renderDayEvents;
  	var calendar = t.calendar;
  	var formatDate = calendar.formatDate;
  	var formatDates = calendar.formatDates;
  
  
  	// overrides
  	t.draggableDayEvent = draggableDayEvent;
  
  	
  	
  	/* Rendering
  	----------------------------------------------------------------------------*/
  	
  
  	function renderEvents(events, modifiedEventId) {
  		var i, len=events.length,
  			dayEvents=[],
  			slotEvents=[];
  		for (i=0; i<len; i++) {
  			if (events[i].allDay) {
  				dayEvents.push(events[i]);
  			}else{
  				slotEvents.push(events[i]);
  			}
  		}
  
  		if (opt('allDaySlot')) {
  			renderDayEvents(dayEvents, modifiedEventId);
  			setHeight(); // no params means set to viewHeight
  		}
  
  		renderSlotSegs(compileSlotSegs(slotEvents), modifiedEventId);
  	}
  	
  	
  	function clearEvents() {
  		getDaySegmentContainer().empty();
  		getSlotSegmentContainer().empty();
  	}
  
  	
  	function compileSlotSegs(events) {
  		var colCnt = getColCnt(),
  			minMinute = getMinMinute(),
  			maxMinute = getMaxMinute(),
  			d,
  			visEventEnds = $.map(events, slotEventEnd),
  			i,
  			j, seg,
  			colSegs,
  			segs = [];
  
  		for (i=0; i<colCnt; i++) {
  
  			d = cellToDate(0, i);
  			addMinutes(d, minMinute);
  
  			colSegs = sliceSegs(
  				events,
  				visEventEnds,
  				d,
  				addMinutes(cloneDate(d), maxMinute-minMinute)
  			);
  
  			colSegs = placeSlotSegs(colSegs); // returns a new order
  
  			for (j=0; j<colSegs.length; j++) {
  				seg = colSegs[j];
  				seg.col = i;
  				segs.push(seg);
  			}
  		}
  
  		return segs;
  	}
  
  
  	function sliceSegs(events, visEventEnds, start, end) {
  		var segs = [],
  			i, len=events.length, event,
  			eventStart, eventEnd,
  			segStart, segEnd,
  			isStart, isEnd;
  		for (i=0; i<len; i++) {
  			event = events[i];
  			eventStart = event.start;
  			eventEnd = visEventEnds[i];
  			if (eventEnd > start && eventStart < end) {
  				if (eventStart < start) {
  					segStart = cloneDate(start);
  					isStart = false;
  				}else{
  					segStart = eventStart;
  					isStart = true;
  				}
  				if (eventEnd > end) {
  					segEnd = cloneDate(end);
  					isEnd = false;
  				}else{
  					segEnd = eventEnd;
  					isEnd = true;
  				}
  				segs.push({
  					event: event,
  					start: segStart,
  					end: segEnd,
  					isStart: isStart,
  					isEnd: isEnd
  				});
  			}
  		}
  		return segs.sort(compareSlotSegs);
  	}
  
  
  	function slotEventEnd(event) {
  		if (event.end) {
  			return cloneDate(event.end);
  		}else{
  			return addMinutes(cloneDate(event.start), opt('defaultEventMinutes'));
  		}
  	}
  	
  	
  	// renders events in the 'time slots' at the bottom
  	// TODO: when we refactor this, when user returns `false` eventRender, don't have empty space
  	// TODO: refactor will include using pixels to detect collisions instead of dates (handy for seg cmp)
  	
  	function renderSlotSegs(segs, modifiedEventId) {
  	
  		var i, segCnt=segs.length, seg,
  			event,
  			top,
  			bottom,
  			columnLeft,
  			columnRight,
  			columnWidth,
  			width,
  			left,
  			right,
  			html = '',
  			eventElements,
  			eventElement,
  			triggerRes,
  			titleElement,
  			height,
  			slotSegmentContainer = getSlotSegmentContainer(),
  			isRTL = opt('isRTL');
  			
  		// calculate position/dimensions, create html
  		for (i=0; i<segCnt; i++) {
  			seg = segs[i];
  			event = seg.event;
  			top = timePosition(seg.start, seg.start);
  			bottom = timePosition(seg.start, seg.end);
  			columnLeft = colContentLeft(seg.col);
  			columnRight = colContentRight(seg.col);
  			columnWidth = columnRight - columnLeft;
  
  			// shave off space on right near scrollbars (2.5%)
  			// TODO: move this to CSS somehow
  			columnRight -= columnWidth * .025;
  			columnWidth = columnRight - columnLeft;
  
  			width = columnWidth * (seg.forwardCoord - seg.backwardCoord);
  
  			if (opt('slotEventOverlap')) {
  				// double the width while making sure resize handle is visible
  				// (assumed to be 20px wide)
  				width = Math.max(
  					(width - (20/2)) * 2,
  					width // narrow columns will want to make the segment smaller than
  						// the natural width. don't allow it
  				);
  			}
  
  			if (isRTL) {
  				right = columnRight - seg.backwardCoord * columnWidth;
  				left = right - width;
  			}
  			else {
  				left = columnLeft + seg.backwardCoord * columnWidth;
  				right = left + width;
  			}
  
  			// make sure horizontal coordinates are in bounds
  			left = Math.max(left, columnLeft);
  			right = Math.min(right, columnRight);
  			width = right - left;
  
  			seg.top = top;
  			seg.left = left;
  			seg.outerWidth = width;
  			seg.outerHeight = bottom - top;
  			html += slotSegHtml(event, seg);
  		}
  
  		slotSegmentContainer[0].innerHTML = html; // faster than html()
  		eventElements = slotSegmentContainer.children();
  		
  		// retrieve elements, run through eventRender callback, bind event handlers
  		for (i=0; i<segCnt; i++) {
  			seg = segs[i];
  			event = seg.event;
  			eventElement = $(eventElements[i]); // faster than eq()
  			triggerRes = trigger('eventRender', event, event, eventElement);
  			if (triggerRes === false) {
  				eventElement.remove();
  			}else{
  				if (triggerRes && triggerRes !== true) {
  					eventElement.remove();
  					eventElement = $(triggerRes)
  						.css({
  							position: 'absolute',
  							top: seg.top,
  							left: seg.left
  						})
  						.appendTo(slotSegmentContainer);
  				}
  				seg.element = eventElement;
  				if (event._id === modifiedEventId) {
  					bindSlotSeg(event, eventElement, seg);
  				}else{
  					eventElement[0]._fci = i; // for lazySegBind
  				}
  				reportEventElement(event, eventElement);
  			}
  		}
  		
  		lazySegBind(slotSegmentContainer, segs, bindSlotSeg);
  		
  		// record event sides and title positions
  		for (i=0; i<segCnt; i++) {
  			seg = segs[i];
  			if (eventElement = seg.element) {
  				seg.vsides = vsides(eventElement, true);
  				seg.hsides = hsides(eventElement, true);
  				titleElement = eventElement.find('.fc-event-title');
  				if (titleElement.length) {
  					seg.contentTop = titleElement[0].offsetTop;
  				}
  			}
  		}
  		
  		// set all positions/dimensions at once
  		for (i=0; i<segCnt; i++) {
  			seg = segs[i];
  			if (eventElement = seg.element) {
  				eventElement[0].style.width = Math.max(0, seg.outerWidth - seg.hsides) + 'px';
  				height = Math.max(0, seg.outerHeight - seg.vsides);
  				eventElement[0].style.height = height + 'px';
  				event = seg.event;
  				if (seg.contentTop !== undefined && height - seg.contentTop < 10) {
  					// not enough room for title, put it in the time (TODO: maybe make both display:inline instead)
  					eventElement.find('div.fc-event-time')
  						.text(formatDate(event.start, opt('timeFormat')) + ' - ' + event.title);
  					eventElement.find('div.fc-event-title')
  						.remove();
  				}
  				trigger('eventAfterRender', event, event, eventElement);
  			}
  		}
  					
  	}
  	
  	
  	function slotSegHtml(event, seg) {
  		var html = "<";
  		var url = event.url;
  		var skinCss = getSkinCss(event, opt);
  		var classes = ['fc-event', 'fc-event-vert'];
  		if (isEventDraggable(event)) {
  			classes.push('fc-event-draggable');
  		}
  		if (seg.isStart) {
  			classes.push('fc-event-start');
  		}
  		if (seg.isEnd) {
  			classes.push('fc-event-end');
  		}
  		classes = classes.concat(event.className);
  		if (event.source) {
  			classes = classes.concat(event.source.className || []);
  		}
  		if (url) {
  			html += "a href='" + htmlEscape(event.url) + "'";
  		}else{
  			html += "div";
  		}
  		html +=
  			" class='" + classes.join(' ') + "'" +
  			" style=" +
  				"'" +
  				"position:absolute;" +
  				"top:" + seg.top + "px;" +
  				"left:" + seg.left + "px;" +
  				skinCss +
  				"'" +
  			">" +
  			"<div class='fc-event-inner'>" +
  			"<div class='fc-event-time'>" +
  			htmlEscape(formatDates(event.start, event.end, opt('timeFormat'))) +
  			"</div>" +
  			"<div class='fc-event-title'>" +
  			htmlEscape(event.title || '') +
  			"</div>" +
  			"</div>" +
  			"<div class='fc-event-bg'></div>";
  		if (seg.isEnd && isEventResizable(event)) {
  			html +=
  				"<div class='ui-resizable-handle ui-resizable-s'>=</div>";
  		}
  		html +=
  			"</" + (url ? "a" : "div") + ">";
  		return html;
  	}
  	
  	
  	function bindSlotSeg(event, eventElement, seg) {
  		var timeElement = eventElement.find('div.fc-event-time');
  		if (isEventDraggable(event)) {
  			draggableSlotEvent(event, eventElement, timeElement);
  		}
  		if (seg.isEnd && isEventResizable(event)) {
  			resizableSlotEvent(event, eventElement, timeElement);
  		}
  		eventElementHandlers(event, eventElement);
  	}
  	
  	
  	
  	/* Dragging
  	-----------------------------------------------------------------------------------*/
  	
  	
  	// when event starts out FULL-DAY
  	// overrides DayEventRenderer's version because it needs to account for dragging elements
  	// to and from the slot area.
  	
  	function draggableDayEvent(event, eventElement, seg) {
  		var isStart = seg.isStart;
  		var origWidth;
  		var revert;
  		var allDay = true;
  		var dayDelta;
  		var hoverListener = getHoverListener();
  		var colWidth = getColWidth();
  		var snapHeight = getSnapHeight();
  		var snapMinutes = getSnapMinutes();
  		var minMinute = getMinMinute();
  		eventElement.draggable({
  			opacity: opt('dragOpacity', 'month'), // use whatever the month view was using
  			revertDuration: opt('dragRevertDuration'),
  			start: function(ev, ui) {
  				trigger('eventDragStart', eventElement, event, ev, ui);
  				hideEvents(event, eventElement);
  				origWidth = eventElement.width();
  				hoverListener.start(function(cell, origCell) {
  					clearOverlays();
  					if (cell) {
  						revert = false;
  						var origDate = cellToDate(0, origCell.col);
  						var date = cellToDate(0, cell.col);
  						dayDelta = dayDiff(date, origDate);
  						if (!cell.row) {
  							// on full-days
  							renderDayOverlay(
  								addDays(cloneDate(event.start), dayDelta),
  								addDays(exclEndDay(event), dayDelta)
  							);
  							resetElement();
  						}else{
  							// mouse is over bottom slots
  							if (isStart) {
  								if (allDay) {
  									// convert event to temporary slot-event
  									eventElement.width(colWidth - 10); // don't use entire width
  									setOuterHeight(
  										eventElement,
  										snapHeight * Math.round(
  											(event.end ? ((event.end - event.start) / MINUTE_MS) : opt('defaultEventMinutes')) /
  												snapMinutes
  										)
  									);
  									eventElement.draggable('option', 'grid', [colWidth, 1]);
  									allDay = false;
  								}
  							}else{
  								revert = true;
  							}
  						}
  						revert = revert || (allDay && !dayDelta);
  					}else{
  						resetElement();
  						revert = true;
  					}
  					eventElement.draggable('option', 'revert', revert);
  				}, ev, 'drag');
  			},
  			stop: function(ev, ui) {
  				hoverListener.stop();
  				clearOverlays();
  				trigger('eventDragStop', eventElement, event, ev, ui);
  				if (revert) {
  					// hasn't moved or is out of bounds (draggable has already reverted)
  					resetElement();
  					eventElement.css('filter', ''); // clear IE opacity side-effects
  					showEvents(event, eventElement);
  				}else{
  					// changed!
  					var minuteDelta = 0;
  					if (!allDay) {
  						minuteDelta = Math.round((eventElement.offset().top - getSlotContainer().offset().top) / snapHeight)
  							* snapMinutes
  							+ minMinute
  							- (event.start.getHours() * 60 + event.start.getMinutes());
  					}
  					eventDrop(this, event, dayDelta, minuteDelta, allDay, ev, ui);
  				}
  			}
  		});
  		function resetElement() {
  			if (!allDay) {
  				eventElement
  					.width(origWidth)
  					.height('')
  					.draggable('option', 'grid', null);
  				allDay = true;
  			}
  		}
  	}
  	
  	
  	// when event starts out IN TIMESLOTS
  	
  	function draggableSlotEvent(event, eventElement, timeElement) {
  		var coordinateGrid = t.getCoordinateGrid();
  		var colCnt = getColCnt();
  		var colWidth = getColWidth();
  		var snapHeight = getSnapHeight();
  		var snapMinutes = getSnapMinutes();
  
  		// states
  		var origPosition; // original position of the element, not the mouse
  		var origCell;
  		var isInBounds, prevIsInBounds;
  		var isAllDay, prevIsAllDay;
  		var colDelta, prevColDelta;
  		var dayDelta; // derived from colDelta
  		var minuteDelta, prevMinuteDelta;
  
  		eventElement.draggable({
  			scroll: false,
  			grid: [ colWidth, snapHeight ],
  			axis: colCnt==1 ? 'y' : false,
  			opacity: opt('dragOpacity'),
  			revertDuration: opt('dragRevertDuration'),
  			start: function(ev, ui) {
  
  				trigger('eventDragStart', eventElement, event, ev, ui);
  				hideEvents(event, eventElement);
  
  				coordinateGrid.build();
  
  				// initialize states
  				origPosition = eventElement.position();
  				origCell = coordinateGrid.cell(ev.pageX, ev.pageY);
  				isInBounds = prevIsInBounds = true;
  				isAllDay = prevIsAllDay = getIsCellAllDay(origCell);
  				colDelta = prevColDelta = 0;
  				dayDelta = 0;
  				minuteDelta = prevMinuteDelta = 0;
  
  			},
  			drag: function(ev, ui) {
  
  				// NOTE: this `cell` value is only useful for determining in-bounds and all-day.
  				// Bad for anything else due to the discrepancy between the mouse position and the
  				// element position while snapping. (problem revealed in PR #55)
  				//
  				// PS- the problem exists for draggableDayEvent() when dragging an all-day event to a slot event.
  				// We should overhaul the dragging system and stop relying on jQuery UI.
  				var cell = coordinateGrid.cell(ev.pageX, ev.pageY);
  
  				// update states
  				isInBounds = !!cell;
  				if (isInBounds) {
  					isAllDay = getIsCellAllDay(cell);
  
  					// calculate column delta
  					colDelta = Math.round((ui.position.left - origPosition.left) / colWidth);
  					if (colDelta != prevColDelta) {
  						// calculate the day delta based off of the original clicked column and the column delta
  						var origDate = cellToDate(0, origCell.col);
  						var col = origCell.col + colDelta;
  						col = Math.max(0, col);
  						col = Math.min(colCnt-1, col);
  						var date = cellToDate(0, col);
  						dayDelta = dayDiff(date, origDate);
  					}
  
  					// calculate minute delta (only if over slots)
  					if (!isAllDay) {
  						minuteDelta = Math.round((ui.position.top - origPosition.top) / snapHeight) * snapMinutes;
  					}
  				}
  
  				// any state changes?
  				if (
  					isInBounds != prevIsInBounds ||
  					isAllDay != prevIsAllDay ||
  					colDelta != prevColDelta ||
  					minuteDelta != prevMinuteDelta
  				) {
  
  					updateUI();
  
  					// update previous states for next time
  					prevIsInBounds = isInBounds;
  					prevIsAllDay = isAllDay;
  					prevColDelta = colDelta;
  					prevMinuteDelta = minuteDelta;
  				}
  
  				// if out-of-bounds, revert when done, and vice versa.
  				eventElement.draggable('option', 'revert', !isInBounds);
  
  			},
  			stop: function(ev, ui) {
  
  				clearOverlays();
  				trigger('eventDragStop', eventElement, event, ev, ui);
  
  				if (isInBounds && (isAllDay || dayDelta || minuteDelta)) { // changed!
  					eventDrop(this, event, dayDelta, isAllDay ? 0 : minuteDelta, isAllDay, ev, ui);
  				}
  				else { // either no change or out-of-bounds (draggable has already reverted)
  
  					// reset states for next time, and for updateUI()
  					isInBounds = true;
  					isAllDay = false;
  					colDelta = 0;
  					dayDelta = 0;
  					minuteDelta = 0;
  
  					updateUI();
  					eventElement.css('filter', ''); // clear IE opacity side-effects
  
  					// sometimes fast drags make event revert to wrong position, so reset.
  					// also, if we dragged the element out of the area because of snapping,
  					// but the *mouse* is still in bounds, we need to reset the position.
  					eventElement.css(origPosition);
  
  					showEvents(event, eventElement);
  				}
  			}
  		});
  
  		function updateUI() {
  			clearOverlays();
  			if (isInBounds) {
  				if (isAllDay) {
  					timeElement.hide();
  					eventElement.draggable('option', 'grid', null); // disable grid snapping
  					renderDayOverlay(
  						addDays(cloneDate(event.start), dayDelta),
  						addDays(exclEndDay(event), dayDelta)
  					);
  				}
  				else {
  					updateTimeText(minuteDelta);
  					timeElement.css('display', ''); // show() was causing display=inline
  					eventElement.draggable('option', 'grid', [colWidth, snapHeight]); // re-enable grid snapping
  				}
  			}
  		}
  
  		function updateTimeText(minuteDelta) {
  			var newStart = addMinutes(cloneDate(event.start), minuteDelta);
  			var newEnd;
  			if (event.end) {
  				newEnd = addMinutes(cloneDate(event.end), minuteDelta);
  			}
  			timeElement.text(formatDates(newStart, newEnd, opt('timeFormat')));
  		}
  
  	}
  	
  	
  	
  	/* Resizing
  	--------------------------------------------------------------------------------------*/
  	
  	
  	function resizableSlotEvent(event, eventElement, timeElement) {
  		var snapDelta, prevSnapDelta;
  		var snapHeight = getSnapHeight();
  		var snapMinutes = getSnapMinutes();
  		eventElement.resizable({
  			handles: {
  				s: '.ui-resizable-handle'
  			},
  			grid: snapHeight,
  			start: function(ev, ui) {
  				snapDelta = prevSnapDelta = 0;
  				hideEvents(event, eventElement);
  				trigger('eventResizeStart', this, event, ev, ui);
  			},
  			resize: function(ev, ui) {
  				// don't rely on ui.size.height, doesn't take grid into account
  				snapDelta = Math.round((Math.max(snapHeight, eventElement.height()) - ui.originalSize.height) / snapHeight);
  				if (snapDelta != prevSnapDelta) {
  					timeElement.text(
  						formatDates(
  							event.start,
  							(!snapDelta && !event.end) ? null : // no change, so don't display time range
  								addMinutes(eventEnd(event), snapMinutes*snapDelta),
  							opt('timeFormat')
  						)
  					);
  					prevSnapDelta = snapDelta;
  				}
  			},
  			stop: function(ev, ui) {
  				trigger('eventResizeStop', this, event, ev, ui);
  				if (snapDelta) {
  					eventResize(this, event, 0, snapMinutes*snapDelta, ev, ui);
  				}else{
  					showEvents(event, eventElement);
  					// BUG: if event was really short, need to put title back in span
  				}
  			}
  		});
  	}
  	
  
  }
  
  
  
  /* Agenda Event Segment Utilities
  -----------------------------------------------------------------------------*/
  
  
  // Sets the seg.backwardCoord and seg.forwardCoord on each segment and returns a new
  // list in the order they should be placed into the DOM (an implicit z-index).
  function placeSlotSegs(segs) {
  	var levels = buildSlotSegLevels(segs);
  	var level0 = levels[0];
  	var i;
  
  	computeForwardSlotSegs(levels);
  
  	if (level0) {
  
  		for (i=0; i<level0.length; i++) {
  			computeSlotSegPressures(level0[i]);
  		}
  
  		for (i=0; i<level0.length; i++) {
  			computeSlotSegCoords(level0[i], 0, 0);
  		}
  	}
  
  	return flattenSlotSegLevels(levels);
  }
  
  
  // Builds an array of segments "levels". The first level will be the leftmost tier of segments
  // if the calendar is left-to-right, or the rightmost if the calendar is right-to-left.
  function buildSlotSegLevels(segs) {
  	var levels = [];
  	var i, seg;
  	var j;
  
  	for (i=0; i<segs.length; i++) {
  		seg = segs[i];
  
  		// go through all the levels and stop on the first level where there are no collisions
  		for (j=0; j<levels.length; j++) {
  			if (!computeSlotSegCollisions(seg, levels[j]).length) {
  				break;
  			}
  		}
  
  		(levels[j] || (levels[j] = [])).push(seg);
  	}
  
  	return levels;
  }
  
  
  // For every segment, figure out the other segments that are in subsequent
  // levels that also occupy the same vertical space. Accumulate in seg.forwardSegs
  function computeForwardSlotSegs(levels) {
  	var i, level;
  	var j, seg;
  	var k;
  
  	for (i=0; i<levels.length; i++) {
  		level = levels[i];
  
  		for (j=0; j<level.length; j++) {
  			seg = level[j];
  
  			seg.forwardSegs = [];
  			for (k=i+1; k<levels.length; k++) {
  				computeSlotSegCollisions(seg, levels[k], seg.forwardSegs);
  			}
  		}
  	}
  }
  
  
  // Figure out which path forward (via seg.forwardSegs) results in the longest path until
  // the furthest edge is reached. The number of segments in this path will be seg.forwardPressure
  function computeSlotSegPressures(seg) {
  	var forwardSegs = seg.forwardSegs;
  	var forwardPressure = 0;
  	var i, forwardSeg;
  
  	if (seg.forwardPressure === undefined) { // not already computed
  
  		for (i=0; i<forwardSegs.length; i++) {
  			forwardSeg = forwardSegs[i];
  
  			// figure out the child's maximum forward path
  			computeSlotSegPressures(forwardSeg);
  
  			// either use the existing maximum, or use the child's forward pressure
  			// plus one (for the forwardSeg itself)
  			forwardPressure = Math.max(
  				forwardPressure,
  				1 + forwardSeg.forwardPressure
  			);
  		}
  
  		seg.forwardPressure = forwardPressure;
  	}
  }
  
  
  // Calculate seg.forwardCoord and seg.backwardCoord for the segment, where both values range
  // from 0 to 1. If the calendar is left-to-right, the seg.backwardCoord maps to "left" and
  // seg.forwardCoord maps to "right" (via percentage). Vice-versa if the calendar is right-to-left.
  //
  // The segment might be part of a "series", which means consecutive segments with the same pressure
  // who's width is unknown until an edge has been hit. `seriesBackwardPressure` is the number of
  // segments behind this one in the current series, and `seriesBackwardCoord` is the starting
  // coordinate of the first segment in the series.
  function computeSlotSegCoords(seg, seriesBackwardPressure, seriesBackwardCoord) {
  	var forwardSegs = seg.forwardSegs;
  	var i;
  
  	if (seg.forwardCoord === undefined) { // not already computed
  
  		if (!forwardSegs.length) {
  
  			// if there are no forward segments, this segment should butt up against the edge
  			seg.forwardCoord = 1;
  		}
  		else {
  
  			// sort highest pressure first
  			forwardSegs.sort(compareForwardSlotSegs);
  
  			// this segment's forwardCoord will be calculated from the backwardCoord of the
  			// highest-pressure forward segment.
  			computeSlotSegCoords(forwardSegs[0], seriesBackwardPressure + 1, seriesBackwardCoord);
  			seg.forwardCoord = forwardSegs[0].backwardCoord;
  		}
  
  		// calculate the backwardCoord from the forwardCoord. consider the series
  		seg.backwardCoord = seg.forwardCoord -
  			(seg.forwardCoord - seriesBackwardCoord) / // available width for series
  			(seriesBackwardPressure + 1); // # of segments in the series
  
  		// use this segment's coordinates to computed the coordinates of the less-pressurized
  		// forward segments
  		for (i=0; i<forwardSegs.length; i++) {
  			computeSlotSegCoords(forwardSegs[i], 0, seg.forwardCoord);
  		}
  	}
  }
  
  
  // Outputs a flat array of segments, from lowest to highest level
  function flattenSlotSegLevels(levels) {
  	var segs = [];
  	var i, level;
  	var j;
  
  	for (i=0; i<levels.length; i++) {
  		level = levels[i];
  
  		for (j=0; j<level.length; j++) {
  			segs.push(level[j]);
  		}
  	}
  
  	return segs;
  }
  
  
  // Find all the segments in `otherSegs` that vertically collide with `seg`.
  // Append into an optionally-supplied `results` array and return.
  function computeSlotSegCollisions(seg, otherSegs, results) {
  	results = results || [];
  
  	for (var i=0; i<otherSegs.length; i++) {
  		if (isSlotSegCollision(seg, otherSegs[i])) {
  			results.push(otherSegs[i]);
  		}
  	}
  
  	return results;
  }
  
  
  // Do these segments occupy the same vertical space?
  function isSlotSegCollision(seg1, seg2) {
  	return seg1.end > seg2.start && seg1.start < seg2.end;
  }
  
  
  // A cmp function for determining which forward segment to rely on more when computing coordinates.
  function compareForwardSlotSegs(seg1, seg2) {
  	// put higher-pressure first
  	return seg2.forwardPressure - seg1.forwardPressure ||
  		// put segments that are closer to initial edge first (and favor ones with no coords yet)
  		(seg1.backwardCoord || 0) - (seg2.backwardCoord || 0) ||
  		// do normal sorting...
  		compareSlotSegs(seg1, seg2);
  }
  
  
  // A cmp function for determining which segment should be closer to the initial edge
  // (the left edge on a left-to-right calendar).
  function compareSlotSegs(seg1, seg2) {
  	return seg1.start - seg2.start || // earlier start time goes first
  		(seg2.end - seg2.start) - (seg1.end - seg1.start) || // tie? longer-duration goes first
  		(seg1.event.title || '').localeCompare(seg2.event.title); // tie? alphabetically by title
  }
  
  
  ;;
  
  
  function View(element, calendar, viewName) {
  	var t = this;
  	
  	
  	// exports
  	t.element = element;
  	t.calendar = calendar;
  	t.name = viewName;
  	t.opt = opt;
  	t.trigger = trigger;
  	t.isEventDraggable = isEventDraggable;
  	t.isEventResizable = isEventResizable;
  	t.setEventData = setEventData;
  	t.clearEventData = clearEventData;
  	t.eventEnd = eventEnd;
  	t.reportEventElement = reportEventElement;
  	t.triggerEventDestroy = triggerEventDestroy;
  	t.eventElementHandlers = eventElementHandlers;
  	t.showEvents = showEvents;
  	t.hideEvents = hideEvents;
  	t.eventDrop = eventDrop;
  	t.eventResize = eventResize;
  	// t.title
  	// t.start, t.end
  	// t.visStart, t.visEnd
  	
  	
  	// imports
  	var defaultEventEnd = t.defaultEventEnd;
  	var normalizeEvent = calendar.normalizeEvent; // in EventManager
  	var reportEventChange = calendar.reportEventChange;
  	
  	
  	// locals
  	var eventsByID = {}; // eventID mapped to array of events (there can be multiple b/c of repeating events)
  	var eventElementsByID = {}; // eventID mapped to array of jQuery elements
  	var eventElementCouples = []; // array of objects, { event, element } // TODO: unify with segment system
  	var options = calendar.options;
  	
  	
  	
  	function opt(name, viewNameOverride) {
  		var v = options[name];
  		if ($.isPlainObject(v)) {
  			return smartProperty(v, viewNameOverride || viewName);
  		}
  		return v;
  	}
  
  	
  	function trigger(name, thisObj) {
  		return calendar.trigger.apply(
  			calendar,
  			[name, thisObj || t].concat(Array.prototype.slice.call(arguments, 2), [t])
  		);
  	}
  	
  
  
  	/* Event Editable Boolean Calculations
  	------------------------------------------------------------------------------*/
  
  	
  	function isEventDraggable(event) {
  		var source = event.source || {};
  		return firstDefined(
  				event.startEditable,
  				source.startEditable,
  				opt('eventStartEditable'),
  				event.editable,
  				source.editable,
  				opt('editable')
  			)
  			&& !opt('disableDragging'); // deprecated
  	}
  	
  	
  	function isEventResizable(event) { // but also need to make sure the seg.isEnd == true
  		var source = event.source || {};
  		return firstDefined(
  				event.durationEditable,
  				source.durationEditable,
  				opt('eventDurationEditable'),
  				event.editable,
  				source.editable,
  				opt('editable')
  			)
  			&& !opt('disableResizing'); // deprecated
  	}
  	
  	
  	
  	/* Event Data
  	------------------------------------------------------------------------------*/
  	
  	
  	function setEventData(events) { // events are already normalized at this point
  		eventsByID = {};
  		var i, len=events.length, event;
  		for (i=0; i<len; i++) {
  			event = events[i];
  			if (eventsByID[event._id]) {
  				eventsByID[event._id].push(event);
  			}else{
  				eventsByID[event._id] = [event];
  			}
  		}
  	}
  
  
  	function clearEventData() {
  		eventsByID = {};
  		eventElementsByID = {};
  		eventElementCouples = [];
  	}
  	
  	
  	// returns a Date object for an event's end
  	function eventEnd(event) {
  		return event.end ? cloneDate(event.end) : defaultEventEnd(event);
  	}
  	
  	
  	
  	/* Event Elements
  	------------------------------------------------------------------------------*/
  	
  	
  	// report when view creates an element for an event
  	function reportEventElement(event, element) {
  		eventElementCouples.push({ event: event, element: element });
  		if (eventElementsByID[event._id]) {
  			eventElementsByID[event._id].push(element);
  		}else{
  			eventElementsByID[event._id] = [element];
  		}
  	}
  
  
  	function triggerEventDestroy() {
  		$.each(eventElementCouples, function(i, couple) {
  			t.trigger('eventDestroy', couple.event, couple.event, couple.element);
  		});
  	}
  	
  	
  	// attaches eventClick, eventMouseover, eventMouseout
  	function eventElementHandlers(event, eventElement) {
  		eventElement
  			.click(function(ev) {
  				if (!eventElement.hasClass('ui-draggable-dragging') &&
  					!eventElement.hasClass('ui-resizable-resizing')) {
  						return trigger('eventClick', this, event, ev);
  					}
  			})
  			.hover(
  				function(ev) {
  					trigger('eventMouseover', this, event, ev);
  				},
  				function(ev) {
  					trigger('eventMouseout', this, event, ev);
  				}
  			);
  		// TODO: don't fire eventMouseover/eventMouseout *while* dragging is occuring (on subject element)
  		// TODO: same for resizing
  	}
  	
  	
  	function showEvents(event, exceptElement) {
  		eachEventElement(event, exceptElement, 'show');
  	}
  	
  	
  	function hideEvents(event, exceptElement) {
  		eachEventElement(event, exceptElement, 'hide');
  	}
  	
  	
  	function eachEventElement(event, exceptElement, funcName) {
  		// NOTE: there may be multiple events per ID (repeating events)
  		// and multiple segments per event
  		var elements = eventElementsByID[event._id],
  			i, len = elements.length;
  		for (i=0; i<len; i++) {
  			if (!exceptElement || elements[i][0] != exceptElement[0]) {
  				elements[i][funcName]();
  			}
  		}
  	}
  	
  	
  	
  	/* Event Modification Reporting
  	---------------------------------------------------------------------------------*/
  	
  	
  	function eventDrop(e, event, dayDelta, minuteDelta, allDay, ev, ui) {
  		var oldAllDay = event.allDay;
  		var eventId = event._id;
  		moveEvents(eventsByID[eventId], dayDelta, minuteDelta, allDay);
  		trigger(
  			'eventDrop',
  			e,
  			event,
  			dayDelta,
  			minuteDelta,
  			allDay,
  			function() {
  				// TODO: investigate cases where this inverse technique might not work
  				moveEvents(eventsByID[eventId], -dayDelta, -minuteDelta, oldAllDay);
  				reportEventChange(eventId);
  			},
  			ev,
  			ui
  		);
  		reportEventChange(eventId);
  	}
  	
  	
  	function eventResize(e, event, dayDelta, minuteDelta, ev, ui) {
  		var eventId = event._id;
  		elongateEvents(eventsByID[eventId], dayDelta, minuteDelta);
  		trigger(
  			'eventResize',
  			e,
  			event,
  			dayDelta,
  			minuteDelta,
  			function() {
  				// TODO: investigate cases where this inverse technique might not work
  				elongateEvents(eventsByID[eventId], -dayDelta, -minuteDelta);
  				reportEventChange(eventId);
  			},
  			ev,
  			ui
  		);
  		reportEventChange(eventId);
  	}
  	
  	
  	
  	/* Event Modification Math
  	---------------------------------------------------------------------------------*/
  	
  	
  	function moveEvents(events, dayDelta, minuteDelta, allDay) {
  		minuteDelta = minuteDelta || 0;
  		for (var e, len=events.length, i=0; i<len; i++) {
  			e = events[i];
  			if (allDay !== undefined) {
  				e.allDay = allDay;
  			}
  			addMinutes(addDays(e.start, dayDelta, true), minuteDelta);
  			if (e.end) {
  				e.end = addMinutes(addDays(e.end, dayDelta, true), minuteDelta);
  			}
  			normalizeEvent(e, options);
  		}
  	}
  	
  	
  	function elongateEvents(events, dayDelta, minuteDelta) {
  		minuteDelta = minuteDelta || 0;
  		for (var e, len=events.length, i=0; i<len; i++) {
  			e = events[i];
  			e.end = addMinutes(addDays(eventEnd(e), dayDelta, true), minuteDelta);
  			normalizeEvent(e, options);
  		}
  	}
  
  
  
  	// ====================================================================================================
  	// Utilities for day "cells"
  	// ====================================================================================================
  	// The "basic" views are completely made up of day cells.
  	// The "agenda" views have day cells at the top "all day" slot.
  	// This was the obvious common place to put these utilities, but they should be abstracted out into
  	// a more meaningful class (like DayEventRenderer).
  	// ====================================================================================================
  
  
  	// For determining how a given "cell" translates into a "date":
  	//
  	// 1. Convert the "cell" (row and column) into a "cell offset" (the # of the cell, cronologically from the first).
  	//    Keep in mind that column indices are inverted with isRTL. This is taken into account.
  	//
  	// 2. Convert the "cell offset" to a "day offset" (the # of days since the first visible day in the view).
  	//
  	// 3. Convert the "day offset" into a "date" (a JavaScript Date object).
  	//
  	// The reverse transformation happens when transforming a date into a cell.
  
  
  	// exports
  	t.isHiddenDay = isHiddenDay;
  	t.skipHiddenDays = skipHiddenDays;
  	t.getCellsPerWeek = getCellsPerWeek;
  	t.dateToCell = dateToCell;
  	t.dateToDayOffset = dateToDayOffset;
  	t.dayOffsetToCellOffset = dayOffsetToCellOffset;
  	t.cellOffsetToCell = cellOffsetToCell;
  	t.cellToDate = cellToDate;
  	t.cellToCellOffset = cellToCellOffset;
  	t.cellOffsetToDayOffset = cellOffsetToDayOffset;
  	t.dayOffsetToDate = dayOffsetToDate;
  	t.rangeToSegments = rangeToSegments;
  
  
  	// internals
  	var hiddenDays = opt('hiddenDays') || []; // array of day-of-week indices that are hidden
  	var isHiddenDayHash = []; // is the day-of-week hidden? (hash with day-of-week-index -> bool)
  	var cellsPerWeek;
  	var dayToCellMap = []; // hash from dayIndex -> cellIndex, for one week
  	var cellToDayMap = []; // hash from cellIndex -> dayIndex, for one week
  	var isRTL = opt('isRTL');
  
  
  	// initialize important internal variables
  	(function() {
  
  		if (opt('weekends') === false) {
  			hiddenDays.push(0, 6); // 0=sunday, 6=saturday
  		}
  
  		// Loop through a hypothetical week and determine which
  		// days-of-week are hidden. Record in both hashes (one is the reverse of the other).
  		for (var dayIndex=0, cellIndex=0; dayIndex<7; dayIndex++) {
  			dayToCellMap[dayIndex] = cellIndex;
  			isHiddenDayHash[dayIndex] = $.inArray(dayIndex, hiddenDays) != -1;
  			if (!isHiddenDayHash[dayIndex]) {
  				cellToDayMap[cellIndex] = dayIndex;
  				cellIndex++;
  			}
  		}
  
  		cellsPerWeek = cellIndex;
  		if (!cellsPerWeek) {
  			throw 'invalid hiddenDays'; // all days were hidden? bad.
  		}
  
  	})();
  
  
  	// Is the current day hidden?
  	// `day` is a day-of-week index (0-6), or a Date object
  	function isHiddenDay(day) {
  		if (typeof day == 'object') {
  			day = day.getDay();
  		}
  		return isHiddenDayHash[day];
  	}
  
  
  	function getCellsPerWeek() {
  		return cellsPerWeek;
  	}
  
  
  	// Keep incrementing the current day until it is no longer a hidden day.
  	// If the initial value of `date` is not a hidden day, don't do anything.
  	// Pass `isExclusive` as `true` if you are dealing with an end date.
  	// `inc` defaults to `1` (increment one day forward each time)
  	function skipHiddenDays(date, inc, isExclusive) {
  		inc = inc || 1;
  		while (
  			isHiddenDayHash[ ( date.getDay() + (isExclusive ? inc : 0) + 7 ) % 7 ]
  		) {
  			addDays(date, inc);
  		}
  	}
  
  
  	//
  	// TRANSFORMATIONS: cell -> cell offset -> day offset -> date
  	//
  
  	// cell -> date (combines all transformations)
  	// Possible arguments:
  	// - row, col
  	// - { row:#, col: # }
  	function cellToDate() {
  		var cellOffset = cellToCellOffset.apply(null, arguments);
  		var dayOffset = cellOffsetToDayOffset(cellOffset);
  		var date = dayOffsetToDate(dayOffset);
  		return date;
  	}
  
  	// cell -> cell offset
  	// Possible arguments:
  	// - row, col
  	// - { row:#, col:# }
  	function cellToCellOffset(row, col) {
  		var colCnt = t.getColCnt();
  
  		// rtl variables. wish we could pre-populate these. but where?
  		var dis = isRTL ? -1 : 1;
  		var dit = isRTL ? colCnt - 1 : 0;
  
  		if (typeof row == 'object') {
  			col = row.col;
  			row = row.row;
  		}
  		var cellOffset = row * colCnt + (col * dis + dit); // column, adjusted for RTL (dis & dit)
  
  		return cellOffset;
  	}
  
  	// cell offset -> day offset
  	function cellOffsetToDayOffset(cellOffset) {
  		var day0 = t.visStart.getDay(); // first date's day of week
  		cellOffset += dayToCellMap[day0]; // normlize cellOffset to beginning-of-week
  		return Math.floor(cellOffset / cellsPerWeek) * 7 // # of days from full weeks
  			+ cellToDayMap[ // # of days from partial last week
  				(cellOffset % cellsPerWeek + cellsPerWeek) % cellsPerWeek // crazy math to handle negative cellOffsets
  			]
  			- day0; // adjustment for beginning-of-week normalization
  	}
  
  	// day offset -> date (JavaScript Date object)
  	function dayOffsetToDate(dayOffset) {
  		var date = cloneDate(t.visStart);
  		addDays(date, dayOffset);
  		return date;
  	}
  
  
  	//
  	// TRANSFORMATIONS: date -> day offset -> cell offset -> cell
  	//
  
  	// date -> cell (combines all transformations)
  	function dateToCell(date) {
  		var dayOffset = dateToDayOffset(date);
  		var cellOffset = dayOffsetToCellOffset(dayOffset);
  		var cell = cellOffsetToCell(cellOffset);
  		return cell;
  	}
  
  	// date -> day offset
  	function dateToDayOffset(date) {
  		return dayDiff(date, t.visStart);
  	}
  
  	// day offset -> cell offset
  	function dayOffsetToCellOffset(dayOffset) {
  		var day0 = t.visStart.getDay(); // first date's day of week
  		dayOffset += day0; // normalize dayOffset to beginning-of-week
  		return Math.floor(dayOffset / 7) * cellsPerWeek // # of cells from full weeks
  			+ dayToCellMap[ // # of cells from partial last week
  				(dayOffset % 7 + 7) % 7 // crazy math to handle negative dayOffsets
  			]
  			- dayToCellMap[day0]; // adjustment for beginning-of-week normalization
  	}
  
  	// cell offset -> cell (object with row & col keys)
  	function cellOffsetToCell(cellOffset) {
  		var colCnt = t.getColCnt();
  
  		// rtl variables. wish we could pre-populate these. but where?
  		var dis = isRTL ? -1 : 1;
  		var dit = isRTL ? colCnt - 1 : 0;
  
  		var row = Math.floor(cellOffset / colCnt);
  		var col = ((cellOffset % colCnt + colCnt) % colCnt) * dis + dit; // column, adjusted for RTL (dis & dit)
  		return {
  			row: row,
  			col: col
  		};
  	}
  
  
  	//
  	// Converts a date range into an array of segment objects.
  	// "Segments" are horizontal stretches of time, sliced up by row.
  	// A segment object has the following properties:
  	// - row
  	// - cols
  	// - isStart
  	// - isEnd
  	//
  	function rangeToSegments(startDate, endDate) {
  		var rowCnt = t.getRowCnt();
  		var colCnt = t.getColCnt();
  		var segments = []; // array of segments to return
  
  		// day offset for given date range
  		var rangeDayOffsetStart = dateToDayOffset(startDate);
  		var rangeDayOffsetEnd = dateToDayOffset(endDate); // exclusive
  
  		// first and last cell offset for the given date range
  		// "last" implies inclusivity
  		var rangeCellOffsetFirst = dayOffsetToCellOffset(rangeDayOffsetStart);
  		var rangeCellOffsetLast = dayOffsetToCellOffset(rangeDayOffsetEnd) - 1;
  
  		// loop through all the rows in the view
  		for (var row=0; row<rowCnt; row++) {
  
  			// first and last cell offset for the row
  			var rowCellOffsetFirst = row * colCnt;
  			var rowCellOffsetLast = rowCellOffsetFirst + colCnt - 1;
  
  			// get the segment's cell offsets by constraining the range's cell offsets to the bounds of the row
  			var segmentCellOffsetFirst = Math.max(rangeCellOffsetFirst, rowCellOffsetFirst);
  			var segmentCellOffsetLast = Math.min(rangeCellOffsetLast, rowCellOffsetLast);
  
  			// make sure segment's offsets are valid and in view
  			if (segmentCellOffsetFirst <= segmentCellOffsetLast) {
  
  				// translate to cells
  				var segmentCellFirst = cellOffsetToCell(segmentCellOffsetFirst);
  				var segmentCellLast = cellOffsetToCell(segmentCellOffsetLast);
  
  				// view might be RTL, so order by leftmost column
  				var cols = [ segmentCellFirst.col, segmentCellLast.col ].sort();
  
  				// Determine if segment's first/last cell is the beginning/end of the date range.
  				// We need to compare "day offset" because "cell offsets" are often ambiguous and
  				// can translate to multiple days, and an edge case reveals itself when we the
  				// range's first cell is hidden (we don't want isStart to be true).
  				var isStart = cellOffsetToDayOffset(segmentCellOffsetFirst) == rangeDayOffsetStart;
  				var isEnd = cellOffsetToDayOffset(segmentCellOffsetLast) + 1 == rangeDayOffsetEnd; // +1 for comparing exclusively
  
  				segments.push({
  					row: row,
  					leftCol: cols[0],
  					rightCol: cols[1],
  					isStart: isStart,
  					isEnd: isEnd
  				});
  			}
  		}
  
  		return segments;
  	}
  	
  
  }
  
  ;;
  
  function DayEventRenderer() {
  	var t = this;
  
  	
  	// exports
  	t.renderDayEvents = renderDayEvents;
  	t.draggableDayEvent = draggableDayEvent; // made public so that subclasses can override
  	t.resizableDayEvent = resizableDayEvent; // "
  	
  	
  	// imports
  	var opt = t.opt;
  	var trigger = t.trigger;
  	var isEventDraggable = t.isEventDraggable;
  	var isEventResizable = t.isEventResizable;
  	var eventEnd = t.eventEnd;
  	var reportEventElement = t.reportEventElement;
  	var eventElementHandlers = t.eventElementHandlers;
  	var showEvents = t.showEvents;
  	var hideEvents = t.hideEvents;
  	var eventDrop = t.eventDrop;
  	var eventResize = t.eventResize;
  	var getRowCnt = t.getRowCnt;
  	var getColCnt = t.getColCnt;
  	var getColWidth = t.getColWidth;
  	var allDayRow = t.allDayRow; // TODO: rename
  	var colLeft = t.colLeft;
  	var colRight = t.colRight;
  	var colContentLeft = t.colContentLeft;
  	var colContentRight = t.colContentRight;
  	var dateToCell = t.dateToCell;
  	var getDaySegmentContainer = t.getDaySegmentContainer;
  	var formatDates = t.calendar.formatDates;
  	var renderDayOverlay = t.renderDayOverlay;
  	var clearOverlays = t.clearOverlays;
  	var clearSelection = t.clearSelection;
  	var getHoverListener = t.getHoverListener;
  	var rangeToSegments = t.rangeToSegments;
  	var cellToDate = t.cellToDate;
  	var cellToCellOffset = t.cellToCellOffset;
  	var cellOffsetToDayOffset = t.cellOffsetToDayOffset;
  	var dateToDayOffset = t.dateToDayOffset;
  	var dayOffsetToCellOffset = t.dayOffsetToCellOffset;
  
  
  	// Render `events` onto the calendar, attach mouse event handlers, and call the `eventAfterRender` callback for each.
  	// Mouse event will be lazily applied, except if the event has an ID of `modifiedEventId`.
  	// Can only be called when the event container is empty (because it wipes out all innerHTML).
  	function renderDayEvents(events, modifiedEventId) {
  
  		// do the actual rendering. Receive the intermediate "segment" data structures.
  		var segments = _renderDayEvents(
  			events,
  			false, // don't append event elements
  			true // set the heights of the rows
  		);
  
  		// report the elements to the View, for general drag/resize utilities
  		segmentElementEach(segments, function(segment, element) {
  			reportEventElement(segment.event, element);
  		});
  
  		// attach mouse handlers
  		attachHandlers(segments, modifiedEventId);
  
  		// call `eventAfterRender` callback for each event
  		segmentElementEach(segments, function(segment, element) {
  			trigger('eventAfterRender', segment.event, segment.event, element);
  		});
  	}
  
  
  	// Render an event on the calendar, but don't report them anywhere, and don't attach mouse handlers.
  	// Append this event element to the event container, which might already be populated with events.
  	// If an event's segment will have row equal to `adjustRow`, then explicitly set its top coordinate to `adjustTop`.
  	// This hack is used to maintain continuity when user is manually resizing an event.
  	// Returns an array of DOM elements for the event.
  	function renderTempDayEvent(event, adjustRow, adjustTop) {
  
  		// actually render the event. `true` for appending element to container.
  		// Recieve the intermediate "segment" data structures.
  		var segments = _renderDayEvents(
  			[ event ],
  			true, // append event elements
  			false // don't set the heights of the rows
  		);
  
  		var elements = [];
  
  		// Adjust certain elements' top coordinates
  		segmentElementEach(segments, function(segment, element) {
  			if (segment.row === adjustRow) {
  				element.css('top', adjustTop);
  			}
  			elements.push(element[0]); // accumulate DOM nodes
  		});
  
  		return elements;
  	}
  
  
  	// Render events onto the calendar. Only responsible for the VISUAL aspect.
  	// Not responsible for attaching handlers or calling callbacks.
  	// Set `doAppend` to `true` for rendering elements without clearing the existing container.
  	// Set `doRowHeights` to allow setting the height of each row, to compensate for vertical event overflow.
  	function _renderDayEvents(events, doAppend, doRowHeights) {
  
  		// where the DOM nodes will eventually end up
  		var finalContainer = getDaySegmentContainer();
  
  		// the container where the initial HTML will be rendered.
  		// If `doAppend`==true, uses a temporary container.
  		var renderContainer = doAppend ? $("<div/>") : finalContainer;
  
  		var segments = buildSegments(events);
  		var html;
  		var elements;
  
  		// calculate the desired `left` and `width` properties on each segment object
  		calculateHorizontals(segments);
  
  		// build the HTML string. relies on `left` property
  		html = buildHTML(segments);
  
  		// render the HTML. innerHTML is considerably faster than jQuery's .html()
  		renderContainer[0].innerHTML = html;
  
  		// retrieve the individual elements
  		elements = renderContainer.children();
  
  		// if we were appending, and thus using a temporary container,
  		// re-attach elements to the real container.
  		if (doAppend) {
  			finalContainer.append(elements);
  		}
  
  		// assigns each element to `segment.event`, after filtering them through user callbacks
  		resolveElements(segments, elements);
  
  		// Calculate the left and right padding+margin for each element.
  		// We need this for setting each element's desired outer width, because of the W3C box model.
  		// It's important we do this in a separate pass from acually setting the width on the DOM elements
  		// because alternating reading/writing dimensions causes reflow for every iteration.
  		segmentElementEach(segments, function(segment, element) {
  			segment.hsides = hsides(element, true); // include margins = `true`
  		});
  
  		// Set the width of each element
  		segmentElementEach(segments, function(segment, element) {
  			element.width(
  				Math.max(0, segment.outerWidth - segment.hsides)
  			);
  		});
  
  		// Grab each element's outerHeight (setVerticals uses this).
  		// To get an accurate reading, it's important to have each element's width explicitly set already.
  		segmentElementEach(segments, function(segment, element) {
  			segment.outerHeight = element.outerHeight(true); // include margins = `true`
  		});
  
  		// Set the top coordinate on each element (requires segment.outerHeight)
  		setVerticals(segments, doRowHeights);
  
  		return segments;
  	}
  
  
  	// Generate an array of "segments" for all events.
  	function buildSegments(events) {
  		var segments = [];
  		for (var i=0; i<events.length; i++) {
  			var eventSegments = buildSegmentsForEvent(events[i]);
  			segments.push.apply(segments, eventSegments); // append an array to an array
  		}
  		return segments;
  	}
  
  
  	// Generate an array of segments for a single event.
  	// A "segment" is the same data structure that View.rangeToSegments produces,
  	// with the addition of the `event` property being set to reference the original event.
  	function buildSegmentsForEvent(event) {
  		var startDate = event.start;
  		var endDate = exclEndDay(event);
  		var segments = rangeToSegments(startDate, endDate);
  		for (var i=0; i<segments.length; i++) {
  			segments[i].event = event;
  		}
  		return segments;
  	}
  
  
  	// Sets the `left` and `outerWidth` property of each segment.
  	// These values are the desired dimensions for the eventual DOM elements.
  	function calculateHorizontals(segments) {
  		var isRTL = opt('isRTL');
  		for (var i=0; i<segments.length; i++) {
  			var segment = segments[i];
  
  			// Determine functions used for calulating the elements left/right coordinates,
  			// depending on whether the view is RTL or not.
  			// NOTE:
  			// colLeft/colRight returns the coordinate butting up the edge of the cell.
  			// colContentLeft/colContentRight is indented a little bit from the edge.
  			var leftFunc = (isRTL ? segment.isEnd : segment.isStart) ? colContentLeft : colLeft;
  			var rightFunc = (isRTL ? segment.isStart : segment.isEnd) ? colContentRight : colRight;
  
  			var left = leftFunc(segment.leftCol);
  			var right = rightFunc(segment.rightCol);
  			segment.left = left;
  			segment.outerWidth = right - left;
  		}
  	}
  
  
  	// Build a concatenated HTML string for an array of segments
  	function buildHTML(segments) {
  		var html = '';
  		for (var i=0; i<segments.length; i++) {
  			html += buildHTMLForSegment(segments[i]);
  		}
  		return html;
  	}
  
  
  	// Build an HTML string for a single segment.
  	// Relies on the following properties:
  	// - `segment.event` (from `buildSegmentsForEvent`)
  	// - `segment.left` (from `calculateHorizontals`)
  	function buildHTMLForSegment(segment) {
  		var html = '';
  		var isRTL = opt('isRTL');
  		var event = segment.event;
  		var url = event.url;
  
  		// generate the list of CSS classNames
  		var classNames = [ 'fc-event', 'fc-event-hori' ];
  		if (isEventDraggable(event)) {
  			classNames.push('fc-event-draggable');
  		}
  		if (segment.isStart) {
  			classNames.push('fc-event-start');
  		}
  		if (segment.isEnd) {
  			classNames.push('fc-event-end');
  		}
  		// use the event's configured classNames
  		// guaranteed to be an array via `normalizeEvent`
  		classNames = classNames.concat(event.className);
  		if (event.source) {
  			// use the event's source's classNames, if specified
  			classNames = classNames.concat(event.source.className || []);
  		}
  
  		// generate a semicolon delimited CSS string for any of the "skin" properties
  		// of the event object (`backgroundColor`, `borderColor` and such)
  		var skinCss = getSkinCss(event, opt);
  
  		if (url) {
  			html += "<a href='" + htmlEscape(url) + "'";
  		}else{
  			html += "<div";
  		}
  		html +=
  			" class='" + classNames.join(' ') + "'" +
  			" style=" +
  				"'" +
  				"position:absolute;" +
  				"left:" + segment.left + "px;" +
  				skinCss +
  				"'" +
  			">" +
  			"<div class='fc-event-inner'>";
  		if (!event.allDay && segment.isStart) {
  			html +=
  				"<span class='fc-event-time'>" +
  				htmlEscape(
  					formatDates(event.start, event.end, opt('timeFormat'))
  				) +
  				"</span>";
  		}
  		html +=
  			"<span class='fc-event-title'>" +
  			htmlEscape(event.title || '') +
  			"</span>" +
  			"</div>";
  		if (segment.isEnd && isEventResizable(event)) {
  			html +=
  				"<div class='ui-resizable-handle ui-resizable-" + (isRTL ? 'w' : 'e') + "'>" +
  				"&nbsp;&nbsp;&nbsp;" + // makes hit area a lot better for IE6/7
  				"</div>";
  		}
  		html += "</" + (url ? "a" : "div") + ">";
  
  		// TODO:
  		// When these elements are initially rendered, they will be briefly visibile on the screen,
  		// even though their widths/heights are not set.
  		// SOLUTION: initially set them as visibility:hidden ?
  
  		return html;
  	}
  
  
  	// Associate each segment (an object) with an element (a jQuery object),
  	// by setting each `segment.element`.
  	// Run each element through the `eventRender` filter, which allows developers to
  	// modify an existing element, supply a new one, or cancel rendering.
  	function resolveElements(segments, elements) {
  		for (var i=0; i<segments.length; i++) {
  			var segment = segments[i];
  			var event = segment.event;
  			var element = elements.eq(i);
  
  			// call the trigger with the original element
  			var triggerRes = trigger('eventRender', event, event, element);
  
  			if (triggerRes === false) {
  				// if `false`, remove the event from the DOM and don't assign it to `segment.event`
  				element.remove();
  			}
  			else {
  				if (triggerRes && triggerRes !== true) {
  					// the trigger returned a new element, but not `true` (which means keep the existing element)
  
  					// re-assign the important CSS dimension properties that were already assigned in `buildHTMLForSegment`
  					triggerRes = $(triggerRes)
  						.css({
  							position: 'absolute',
  							left: segment.left
  						});
  
  					element.replaceWith(triggerRes);
  					element = triggerRes;
  				}
  
  				segment.element = element;
  			}
  		}
  	}
  
  
  
  	/* Top-coordinate Methods
  	-------------------------------------------------------------------------------------------------*/
  
  
  	// Sets the "top" CSS property for each element.
  	// If `doRowHeights` is `true`, also sets each row's first cell to an explicit height,
  	// so that if elements vertically overflow, the cell expands vertically to compensate.
  	function setVerticals(segments, doRowHeights) {
  		var rowContentHeights = calculateVerticals(segments); // also sets segment.top
  		var rowContentElements = getRowContentElements(); // returns 1 inner div per row
  		var rowContentTops = [];
  
  		// Set each row's height by setting height of first inner div
  		if (doRowHeights) {
  			for (var i=0; i<rowContentElements.length; i++) {
  				rowContentElements[i].height(rowContentHeights[i]);
  			}
  		}
  
  		// Get each row's top, relative to the views's origin.
  		// Important to do this after setting each row's height.
  		for (var i=0; i<rowContentElements.length; i++) {
  			rowContentTops.push(
  				rowContentElements[i].position().top
  			);
  		}
  
  		// Set each segment element's CSS "top" property.
  		// Each segment object has a "top" property, which is relative to the row's top, but...
  		segmentElementEach(segments, function(segment, element) {
  			element.css(
  				'top',
  				rowContentTops[segment.row] + segment.top // ...now, relative to views's origin
  			);
  		});
  	}
  
  
  	// Calculate the "top" coordinate for each segment, relative to the "top" of the row.
  	// Also, return an array that contains the "content" height for each row
  	// (the height displaced by the vertically stacked events in the row).
  	// Requires segments to have their `outerHeight` property already set.
  	function calculateVerticals(segments) {
  		var rowCnt = getRowCnt();
  		var colCnt = getColCnt();
  		var rowContentHeights = []; // content height for each row
  		var segmentRows = buildSegmentRows(segments); // an array of segment arrays, one for each row
  
  		for (var rowI=0; rowI<rowCnt; rowI++) {
  			var segmentRow = segmentRows[rowI];
  
  			// an array of running total heights for each column.
  			// initialize with all zeros.
  			var colHeights = [];
  			for (var colI=0; colI<colCnt; colI++) {
  				colHeights.push(0);
  			}
  
  			// loop through every segment
  			for (var segmentI=0; segmentI<segmentRow.length; segmentI++) {
  				var segment = segmentRow[segmentI];
  
  				// find the segment's top coordinate by looking at the max height
  				// of all the columns the segment will be in.
  				segment.top = arrayMax(
  					colHeights.slice(
  						segment.leftCol,
  						segment.rightCol + 1 // make exclusive for slice
  					)
  				);
  
  				// adjust the columns to account for the segment's height
  				for (var colI=segment.leftCol; colI<=segment.rightCol; colI++) {
  					colHeights[colI] = segment.top + segment.outerHeight;
  				}
  			}
  
  			// the tallest column in the row should be the "content height"
  			rowContentHeights.push(arrayMax(colHeights));
  		}
  
  		return rowContentHeights;
  	}
  
  
  	// Build an array of segment arrays, each representing the segments that will
  	// be in a row of the grid, sorted by which event should be closest to the top.
  	function buildSegmentRows(segments) {
  		var rowCnt = getRowCnt();
  		var segmentRows = [];
  		var segmentI;
  		var segment;
  		var rowI;
  
  		// group segments by row
  		for (segmentI=0; segmentI<segments.length; segmentI++) {
  			segment = segments[segmentI];
  			rowI = segment.row;
  			if (segment.element) { // was rendered?
  				if (segmentRows[rowI]) {
  					// already other segments. append to array
  					segmentRows[rowI].push(segment);
  				}
  				else {
  					// first segment in row. create new array
  					segmentRows[rowI] = [ segment ];
  				}
  			}
  		}
  
  		// sort each row
  		for (rowI=0; rowI<rowCnt; rowI++) {
  			segmentRows[rowI] = sortSegmentRow(
  				segmentRows[rowI] || [] // guarantee an array, even if no segments
  			);
  		}
  
  		return segmentRows;
  	}
  
  
  	// Sort an array of segments according to which segment should appear closest to the top
  	function sortSegmentRow(segments) {
  		var sortedSegments = [];
  
  		// build the subrow array
  		var subrows = buildSegmentSubrows(segments);
  
  		// flatten it
  		for (var i=0; i<subrows.length; i++) {
  			sortedSegments.push.apply(sortedSegments, subrows[i]); // append an array to an array
  		}
  
  		return sortedSegments;
  	}
  
  
  	// Take an array of segments, which are all assumed to be in the same row,
  	// and sort into subrows.
  	function buildSegmentSubrows(segments) {
  
  		// Give preference to elements with certain criteria, so they have
  		// a chance to be closer to the top.
  		segments.sort(compareDaySegments);
  
  		var subrows = [];
  		for (var i=0; i<segments.length; i++) {
  			var segment = segments[i];
  
  			// loop through subrows, starting with the topmost, until the segment
  			// doesn't collide with other segments.
  			for (var j=0; j<subrows.length; j++) {
  				if (!isDaySegmentCollision(segment, subrows[j])) {
  					break;
  				}
  			}
  			// `j` now holds the desired subrow index
  			if (subrows[j]) {
  				subrows[j].push(segment);
  			}
  			else {
  				subrows[j] = [ segment ];
  			}
  		}
  
  		return subrows;
  	}
  
  
  	// Return an array of jQuery objects for the placeholder content containers of each row.
  	// The content containers don't actually contain anything, but their dimensions should match
  	// the events that are overlaid on top.
  	function getRowContentElements() {
  		var i;
  		var rowCnt = getRowCnt();
  		var rowDivs = [];
  		for (i=0; i<rowCnt; i++) {
  			rowDivs[i] = allDayRow(i)
  				.find('div.fc-day-content > div');
  		}
  		return rowDivs;
  	}
  
  
  
  	/* Mouse Handlers
  	---------------------------------------------------------------------------------------------------*/
  	// TODO: better documentation!
  
  
  	function attachHandlers(segments, modifiedEventId) {
  		var segmentContainer = getDaySegmentContainer();
  
  		segmentElementEach(segments, function(segment, element, i) {
  			var event = segment.event;
  			if (event._id === modifiedEventId) {
  				bindDaySeg(event, element, segment);
  			}else{
  				element[0]._fci = i; // for lazySegBind
  			}
  		});
  
  		lazySegBind(segmentContainer, segments, bindDaySeg);
  	}
  
  
  	function bindDaySeg(event, eventElement, segment) {
  
  		if (isEventDraggable(event)) {
  			t.draggableDayEvent(event, eventElement, segment); // use `t` so subclasses can override
  		}
  
  		if (
  			segment.isEnd && // only allow resizing on the final segment for an event
  			isEventResizable(event)
  		) {
  			t.resizableDayEvent(event, eventElement, segment); // use `t` so subclasses can override
  		}
  
  		// attach all other handlers.
  		// needs to be after, because resizableDayEvent might stopImmediatePropagation on click
  		eventElementHandlers(event, eventElement);
  	}
  
  	
  	function draggableDayEvent(event, eventElement) {
  		var hoverListener = getHoverListener();
  		var dayDelta;
  		eventElement.draggable({
  			delay: 50,
  			opacity: opt('dragOpacity'),
  			revertDuration: opt('dragRevertDuration'),
  			start: function(ev, ui) {
  				trigger('eventDragStart', eventElement, event, ev, ui);
  				hideEvents(event, eventElement);
  				hoverListener.start(function(cell, origCell, rowDelta, colDelta) {
  					eventElement.draggable('option', 'revert', !cell || !rowDelta && !colDelta);
  					clearOverlays();
  					if (cell) {
  						var origDate = cellToDate(origCell);
  						var date = cellToDate(cell);
  						dayDelta = dayDiff(date, origDate);
  						renderDayOverlay(
  							addDays(cloneDate(event.start), dayDelta),
  							addDays(exclEndDay(event), dayDelta)
  						);
  					}else{
  						dayDelta = 0;
  					}
  				}, ev, 'drag');
  			},
  			stop: function(ev, ui) {
  				hoverListener.stop();
  				clearOverlays();
  				trigger('eventDragStop', eventElement, event, ev, ui);
  				if (dayDelta) {
  					eventDrop(this, event, dayDelta, 0, event.allDay, ev, ui);
  				}else{
  					eventElement.css('filter', ''); // clear IE opacity side-effects
  					showEvents(event, eventElement);
  				}
  			}
  		});
  	}
  
  	
  	function resizableDayEvent(event, element, segment) {
  		var isRTL = opt('isRTL');
  		var direction = isRTL ? 'w' : 'e';
  		var handle = element.find('.ui-resizable-' + direction); // TODO: stop using this class because we aren't using jqui for this
  		var isResizing = false;
  		
  		// TODO: look into using jquery-ui mouse widget for this stuff
  		disableTextSelection(element); // prevent native <a> selection for IE
  		element
  			.mousedown(function(ev) { // prevent native <a> selection for others
  				ev.preventDefault();
  			})
  			.click(function(ev) {
  				if (isResizing) {
  					ev.preventDefault(); // prevent link from being visited (only method that worked in IE6)
  					ev.stopImmediatePropagation(); // prevent fullcalendar eventClick handler from being called
  					                               // (eventElementHandlers needs to be bound after resizableDayEvent)
  				}
  			});
  		
  		handle.mousedown(function(ev) {
  			if (ev.which != 1) {
  				return; // needs to be left mouse button
  			}
  			isResizing = true;
  			var hoverListener = getHoverListener();
  			var rowCnt = getRowCnt();
  			var colCnt = getColCnt();
  			var elementTop = element.css('top');
  			var dayDelta;
  			var helpers;
  			var eventCopy = $.extend({}, event);
  			var minCellOffset = dayOffsetToCellOffset( dateToDayOffset(event.start) );
  			clearSelection();
  			$('body')
  				.css('cursor', direction + '-resize')
  				.one('mouseup', mouseup);
  			trigger('eventResizeStart', this, event, ev);
  			hoverListener.start(function(cell, origCell) {
  				if (cell) {
  
  					var origCellOffset = cellToCellOffset(origCell);
  					var cellOffset = cellToCellOffset(cell);
  
  					// don't let resizing move earlier than start date cell
  					cellOffset = Math.max(cellOffset, minCellOffset);
  
  					dayDelta =
  						cellOffsetToDayOffset(cellOffset) -
  						cellOffsetToDayOffset(origCellOffset);
  
  					if (dayDelta) {
  						eventCopy.end = addDays(eventEnd(event), dayDelta, true);
  						var oldHelpers = helpers;
  
  						helpers = renderTempDayEvent(eventCopy, segment.row, elementTop);
  						helpers = $(helpers); // turn array into a jQuery object
  
  						helpers.find('*').css('cursor', direction + '-resize');
  						if (oldHelpers) {
  							oldHelpers.remove();
  						}
  
  						hideEvents(event);
  					}
  					else {
  						if (helpers) {
  							showEvents(event);
  							helpers.remove();
  							helpers = null;
  						}
  					}
  					clearOverlays();
  					renderDayOverlay( // coordinate grid already rebuilt with hoverListener.start()
  						event.start,
  						addDays( exclEndDay(event), dayDelta )
  						// TODO: instead of calling renderDayOverlay() with dates,
  						// call _renderDayOverlay (or whatever) with cell offsets.
  					);
  				}
  			}, ev);
  			
  			function mouseup(ev) {
  				trigger('eventResizeStop', this, event, ev);
  				$('body').css('cursor', '');
  				hoverListener.stop();
  				clearOverlays();
  				if (dayDelta) {
  					eventResize(this, event, dayDelta, 0, ev);
  					// event redraw will clear helpers
  				}
  				// otherwise, the drag handler already restored the old events
  				
  				setTimeout(function() { // make this happen after the element's click event
  					isResizing = false;
  				},0);
  			}
  		});
  	}
  	
  
  }
  
  
  
  /* Generalized Segment Utilities
  -------------------------------------------------------------------------------------------------*/
  
  
  function isDaySegmentCollision(segment, otherSegments) {
  	for (var i=0; i<otherSegments.length; i++) {
  		var otherSegment = otherSegments[i];
  		if (
  			otherSegment.leftCol <= segment.rightCol &&
  			otherSegment.rightCol >= segment.leftCol
  		) {
  			return true;
  		}
  	}
  	return false;
  }
  
  
  function segmentElementEach(segments, callback) { // TODO: use in AgendaView?
  	for (var i=0; i<segments.length; i++) {
  		var segment = segments[i];
  		var element = segment.element;
  		if (element) {
  			callback(segment, element, i);
  		}
  	}
  }
  
  
  // A cmp function for determining which segments should appear higher up
  function compareDaySegments(a, b) {
  	return (b.rightCol - b.leftCol) - (a.rightCol - a.leftCol) || // put wider events first
  		b.event.allDay - a.event.allDay || // if tie, put all-day events first (booleans cast to 0/1)
  		a.event.start - b.event.start || // if a tie, sort by event start date
  		(a.event.title || '').localeCompare(b.event.title) // if a tie, sort by event title
  }
  
  
  ;;
  
  //BUG: unselect needs to be triggered when events are dragged+dropped
  
  function SelectionManager() {
  	var t = this;
  	
  	
  	// exports
  	t.select = select;
  	t.unselect = unselect;
  	t.reportSelection = reportSelection;
  	t.daySelectionMousedown = daySelectionMousedown;
  	
  	
  	// imports
  	var opt = t.opt;
  	var trigger = t.trigger;
  	var defaultSelectionEnd = t.defaultSelectionEnd;
  	var renderSelection = t.renderSelection;
  	var clearSelection = t.clearSelection;
  	
  	
  	// locals
  	var selected = false;
  
  
  
  	// unselectAuto
  	if (opt('selectable') && opt('unselectAuto')) {
  		$(document).mousedown(function(ev) {
  			var ignore = opt('unselectCancel');
  			if (ignore) {
  				if ($(ev.target).parents(ignore).length) { // could be optimized to stop after first match
  					return;
  				}
  			}
  			unselect(ev);
  		});
  	}
  	
  
  	function select(startDate, endDate, allDay) {
  		unselect();
  		if (!endDate) {
  			endDate = defaultSelectionEnd(startDate, allDay);
  		}
  		renderSelection(startDate, endDate, allDay);
  		reportSelection(startDate, endDate, allDay);
  	}
  	
  	
  	function unselect(ev) {
  		if (selected) {
  			selected = false;
  			clearSelection();
  			trigger('unselect', null, ev);
  		}
  	}
  	
  	
  	function reportSelection(startDate, endDate, allDay, ev) {
  		selected = true;
  		trigger('select', null, startDate, endDate, allDay, ev);
  	}
  	
  	
  	function daySelectionMousedown(ev) { // not really a generic manager method, oh well
  		var cellToDate = t.cellToDate;
  		var getIsCellAllDay = t.getIsCellAllDay;
  		var hoverListener = t.getHoverListener();
  		var reportDayClick = t.reportDayClick; // this is hacky and sort of weird
  		if (ev.which == 1 && opt('selectable')) { // which==1 means left mouse button
  			unselect(ev);
  			var _mousedownElement = this;
  			var dates;
  			hoverListener.start(function(cell, origCell) { // TODO: maybe put cellToDate/getIsCellAllDay info in cell
  				clearSelection();
  				if (cell && getIsCellAllDay(cell)) {
  					dates = [ cellToDate(origCell), cellToDate(cell) ].sort(dateCompare);
  					renderSelection(dates[0], dates[1], true);
  				}else{
  					dates = null;
  				}
  			}, ev);
  			$(document).one('mouseup', function(ev) {
  				hoverListener.stop();
  				if (dates) {
  					if (+dates[0] == +dates[1]) {
  						reportDayClick(dates[0], true, ev);
  					}
  					reportSelection(dates[0], dates[1], true, ev);
  				}
  			});
  		}
  	}
  
  
  }
  
  ;;
   
  function OverlayManager() {
  	var t = this;
  	
  	
  	// exports
  	t.renderOverlay = renderOverlay;
  	t.clearOverlays = clearOverlays;
  	
  	
  	// locals
  	var usedOverlays = [];
  	var unusedOverlays = [];
  	
  	
  	function renderOverlay(rect, parent) {
  		var e = unusedOverlays.shift();
  		if (!e) {
  			e = $("<div class='fc-cell-overlay' style='position:absolute;z-index:3'/>");
  		}
  		if (e[0].parentNode != parent[0]) {
  			e.appendTo(parent);
  		}
  		usedOverlays.push(e.css(rect).show());
  		return e;
  	}
  	
  
  	function clearOverlays() {
  		var e;
  		while (e = usedOverlays.shift()) {
  			unusedOverlays.push(e.hide().unbind());
  		}
  	}
  
  
  }
  
  ;;
  
  function CoordinateGrid(buildFunc) {
  
  	var t = this;
  	var rows;
  	var cols;
  	
  	
  	t.build = function() {
  		rows = [];
  		cols = [];
  		buildFunc(rows, cols);
  	};
  	
  	
  	t.cell = function(x, y) {
  		var rowCnt = rows.length;
  		var colCnt = cols.length;
  		var i, r=-1, c=-1;
  		for (i=0; i<rowCnt; i++) {
  			if (y >= rows[i][0] && y < rows[i][1]) {
  				r = i;
  				break;
  			}
  		}
  		for (i=0; i<colCnt; i++) {
  			if (x >= cols[i][0] && x < cols[i][1]) {
  				c = i;
  				break;
  			}
  		}
  		return (r>=0 && c>=0) ? { row:r, col:c } : null;
  	};
  	
  	
  	t.rect = function(row0, col0, row1, col1, originElement) { // row1,col1 is inclusive
  		var origin = originElement.offset();
  		return {
  			top: rows[row0][0] - origin.top,
  			left: cols[col0][0] - origin.left,
  			width: cols[col1][1] - cols[col0][0],
  			height: rows[row1][1] - rows[row0][0]
  		};
  	};
  
  }
  
  ;;
  
  function HoverListener(coordinateGrid) {
  
  
  	var t = this;
  	var bindType;
  	var change;
  	var firstCell;
  	var cell;
  	
  	
  	t.start = function(_change, ev, _bindType) {
  		change = _change;
  		firstCell = cell = null;
  		coordinateGrid.build();
  		mouse(ev);
  		bindType = _bindType || 'mousemove';
  		$(document).bind(bindType, mouse);
  	};
  	
  	
  	function mouse(ev) {
  		_fixUIEvent(ev); // see below
  		var newCell = coordinateGrid.cell(ev.pageX, ev.pageY);
  		if (!newCell != !cell || newCell && (newCell.row != cell.row || newCell.col != cell.col)) {
  			if (newCell) {
  				if (!firstCell) {
  					firstCell = newCell;
  				}
  				change(newCell, firstCell, newCell.row-firstCell.row, newCell.col-firstCell.col);
  			}else{
  				change(newCell, firstCell);
  			}
  			cell = newCell;
  		}
  	}
  	
  	
  	t.stop = function() {
  		$(document).unbind(bindType, mouse);
  		return cell;
  	};
  	
  	
  }
  
  
  
  // this fix was only necessary for jQuery UI 1.8.16 (and jQuery 1.7 or 1.7.1)
  // upgrading to jQuery UI 1.8.17 (and using either jQuery 1.7 or 1.7.1) fixed the problem
  // but keep this in here for 1.8.16 users
  // and maybe remove it down the line
  
  function _fixUIEvent(event) { // for issue 1168
  	if (event.pageX === undefined) {
  		event.pageX = event.originalEvent.pageX;
  		event.pageY = event.originalEvent.pageY;
  	}
  }
  ;;
  
  function HorizontalPositionCache(getElement) {
  
  	var t = this,
  		elements = {},
  		lefts = {},
  		rights = {};
  		
  	function e(i) {
  		return elements[i] = elements[i] || getElement(i);
  	}
  	
  	t.left = function(i) {
  		return lefts[i] = lefts[i] === undefined ? e(i).position().left : lefts[i];
  	};
  	
  	t.right = function(i) {
  		return rights[i] = rights[i] === undefined ? t.left(i) + e(i).width() : rights[i];
  	};
  	
  	t.clear = function() {
  		elements = {};
  		lefts = {};
  		rights = {};
  	};
  	
  }
  
  ;;
  
  })(jQuery);
  