text: /** TRADUCIDO A ESPAÑOL y ARREGALAS VARIAS COSAS.
   * datepicker.js - MooTools Datepicker class
   * @version 1.16
   * 
   * by MonkeyPhysics.com
   *
   * Source/Documentation available at:
   * http://www.monkeyphysics.com/mootools/script/2/datepicker
   * 
   * --
   * 
   * Smoothly animating, very configurable and easy to install.
   * No Ajax, pure Javascript. 4 skins available out of the box.
   * 
   * --
   *
   * Some Rights Reserved
   * http://creativecommons.org/licenses/by-sa/3.0/
   * 
   */
  
  var DatePicker = new Class({
  	
  	Implements: Options,
  	
  	// working date, which we will keep modifying to render the calendars
  	d: '',
  	
  	// just so that we need not request it over and over
  	today: '',
  	
  	// current user-choice in date object format
  	choice: {}, 
  	
  	// size of body, used to animate the sliding
  	bodysize: {}, 
  	
  	// to check availability of next/previous buttons
  	limit: {}, 
  	
  	// element references:
  	attachTo: null,    // selector for target inputs
  	picker: null,      // main datepicker container
  	slider: null,      // slider that contains both oldContents and newContents, used to animate between 2 different views
  	oldContents: null, // used in animating from-view to new-view
  	newContents: null, // used in animating from-view to new-view
  	input: null,       // original input element (used for input/output)
  	visual: null,      // visible input (used for rendering)
  	
  	options: { 
  		pickerClass: 'datepicker',
  		days: ['Domingo', 'Lunes', 'Martes', 'Miercoles', 'Jueves', 'Viernes', 'Sabado'],
  		months: ['Enero', 'Febrero', 'Marzo', 'Abril', 'Mayo', 'Junio', 'Julio', 'Agosto', 'Septiembre', 'Octubre', 'Noviembre', 'Diciembre'],
  		dayShort: 2,
  		monthShort: 3,
  		startDay: 1, // Sunday (0) through Saturday (6) - be aware that this may affect your layout, since the days on the right might have a different margin
  		timePicker: false,
  		timePickerOnly: false,
  		yearPicker: true,
  		yearsPerPage: 20,
  		format: 'd F, Y', //el formato en que se muestra. (no influye en el valor que se envia en el formulario)
  		allowEmpty: true,
  		inputOutputFormat: 'Y-m-d', //el formato que viene y va desde el formulario
  		animationDuration: 400,
  		useFadeInOut: !Browser.Engine.trident, // dont animate fade-in/fade-out for IE
  		startView: 'month', // allowed values: {time, month, year, decades}
  		positionOffset: { x: 0, y: 0 },
  		minDate: null, // { date: '[date-string]', format: '[date-string-interpretation-format]' }
  		maxDate: null, // same as minDate
  		debug: false,
  		toggleElements: null,
  		
  		// and some event hooks:
  		onShow: $empty,   // triggered when the datepicker pops up
  		onClose: $empty,  // triggered after the datepicker is closed (destroyed)
  		onSelect: $empty  // triggered when a date is selected
  	},
  	
  	initialize: function(attachTo, options) {
  		this.attachTo = attachTo;
  		this.setOptions(options).attach();
  		if (this.options.timePickerOnly) {
  			this.options.timePicker = true;
  			this.options.startView = 'time';
  		}
  		this.formatMinMaxDates();
  		document.addEvent('mousedown', this.close.bind(this));
  	},
  	
  	
  	formatMinMaxDates: function() {
  
  		if (this.options.minDate && $type(this.options.minDate) != 'date') {
  			this.options.minDate = this.unformat(this.options.minDate.date, this.options.minDate.format);
  			this.options.minDate.setHours(0);
  			this.options.minDate.setMinutes(0);
  			this.options.minDate.setSeconds(0);
  			this.options.minDate.setMilliseconds(0);
  		}
  		if (this.options.maxDate && $type(this.options.maxDate) != 'date') {
  			this.options.maxDate = this.unformat(this.options.maxDate.date, this.options.maxDate.format);
  			this.options.maxDate.setHours(23);
  			this.options.maxDate.setMinutes(59);
  			this.options.maxDate.setSeconds(59);
  			this.options.maxDate.setMilliseconds(999);
  		}
  
  	},
  	
  	attach: function() {
  		// toggle the datepicker through a separate element?
  		if ($chk(this.options.toggleElements)) {
  			var togglers = $$(this.options.toggleElements);
  			document.addEvents({
  				'keydown': function(e) {
  					if (e.key == "tab") {
  						this.close(null, true);
  					}
  				}.bind(this)
  			});
  		};
  		
  		// attach functionality to the inputs		
  		$$(this.attachTo).each(function(item, index) {
  			
  			// never double attach
  			if (item.retrieve('datepicker')) return;
  			
  			// determine starting value(s)
  			if ($chk(item.get('value'))) {
  				var init_clone_val = this.format(new Date(this.unformat(item.get('value'), this.options.inputOutputFormat)), this.options.format);
  			} else if (!this.options.allowEmpty) {
  				var init_clone_val = this.format(new Date(), this.options.format);
  			} else {
  				var init_clone_val = '';
  			}
  			
  			// create clone
  			var display = item.getStyle('display');
  			var clone = item
  			.setStyle('display', this.options.debug ? display : 'none')
  			.store('datepicker', true) // to prevent double attachment...
  			.clone()
  			.store('datepicker', true) // ...even for the clone (!)
  			.removeProperty('name')    // secure clean (form)submission
  			.setStyle('display', display)
  			.set('value', init_clone_val)
  			.inject(item, 'after');
  			
  			// events
  			if ($chk(this.options.toggleElements)) {
  				togglers[index]
  					.setStyle('cursor', 'pointer')
  					.addEvents({
  						'click': function(e) {
  							this.onFocus(item, clone);
  						}.bind(this)
  					});
  				clone.addEvents({
  					'blur': function() {
  						item.set('value', clone.get('value'));
  					}
  				});
  			} else {
  				clone.addEvents({
  					'keydown': function(e) {
  						if (this.options.allowEmpty && (e.key == "delete" || e.key == "backspace")) {
  							item.set('value', '');
  							e.target.set('value', '');
  							this.close(null, true);
  						} else if (e.key == "tab") {
  							this.close(null, true);
  						} else {
  							e.stop();
  						}
  					}.bind(this),
  					'focus': function(e) {
  						this.onFocus(item, clone);
  					}.bind(this)
  				});
  			}
  		}.bind(this));
  	},
  	
  	onFocus: function(original_input, visual_input) {
  		var init_visual_date, d = visual_input.getCoordinates();
  		
  		if ($chk(original_input.get('value'))) {
  			init_visual_date = this.unformat(original_input.get('value'), this.options.inputOutputFormat).valueOf();
  		} else {
  			init_visual_date = new Date();
  			if ($chk(this.options.maxDate) && init_visual_date.valueOf() > this.options.maxDate.valueOf()) {
  				init_visual_date = new Date(this.options.maxDate.valueOf());
  			}
  			if ($chk(this.options.minDate) && init_visual_date.valueOf() < this.options.minDate.valueOf()) {
  				init_visual_date = new Date(this.options.minDate.valueOf());
  			}
  		}
  		
  		this.show({ left: d.left + this.options.positionOffset.x, top: d.top + d.height + this.options.positionOffset.y }, init_visual_date);
  		this.input = original_input;
  		this.visual = visual_input;
  		this.options.onShow();
  	},
  	
  	dateToObject: function(d) {
  		return {
  			year: d.getFullYear(),
  			month: d.getMonth(),
  			day: d.getDate(),
  			hours: d.getHours(),
  			minutes: d.getMinutes(),
  			seconds: d.getSeconds()
  		};
  	},
  	
  	dateFromObject: function(values) {
  		var d = new Date();
  		d.setDate(1);
  		['year', 'month', 'day', 'hours', 'minutes', 'seconds'].each(function(type) {
  			var v = values[type];
  			if (!$chk(v)) return;
  			switch (type) {
  				case 'day': d.setDate(v); break;
  				case 'month': d.setMonth(v); break;
  				case 'year': d.setFullYear(v); break;
  				case 'hours': d.setHours(v); break;
  				case 'minutes': d.setMinutes(v); break;
  				case 'seconds': d.setSeconds(v); break;
  			}
  		});
  		return d;
  	},
  	
  	show: function(position, timestamp) {
  		this.formatMinMaxDates();
  		if ($chk(timestamp)) {
  			this.d = new Date(timestamp);
  		} else {
  			this.d = new Date();
  		}
  		this.today = new Date();
  		this.choice = this.dateToObject(this.d);
  		this.mode = (this.options.startView == 'time' && !this.options.timePicker) ? 'month' : this.options.startView;
  		this.render();
  		this.picker.setStyles(position);
  	},
  	
  	render: function(fx) {
  		if (!$chk(this.picker)) {
  			this.constructPicker();
  		} else {
  			// swap contents so we can fill the newContents again and animate
  			var o = this.oldContents;
  			this.oldContents = this.newContents;
  			this.newContents = o;
  			this.newContents.empty();
  		}
  		
  		// remember current working date
  		var startDate = new Date(this.d.getTime());
  		
  		// intially assume both left and right are allowed
  		this.limit = { right: false, left: false };
  		
  		// render! booty!
  		if (this.mode == 'decades') {
  			this.renderDecades();
  		} else if (this.mode == 'year') {
  			this.renderYear();
  		} else if (this.mode == 'time') {
  			this.renderTime();
  			this.limit = { right: true, left: true }; // no left/right in timeview
  		} else {
  			this.renderMonth();
  		}
  		
  		this.picker.getElement('.previous').setStyle('visibility', this.limit.left ? 'hidden' : 'visible');
  		this.picker.getElement('.next').setStyle('visibility', this.limit.right ? 'hidden' : 'visible');
  		this.picker.getElement('.titleText').setStyle('cursor', this.allowZoomOut() ? 'pointer' : 'default');
  		
  		// restore working date
  		this.d = startDate;
  		
  		// if ever the opacity is set to '0' it was only to have us fade it in here
  		// refer to the constructPicker() function, which instantiates the picker at opacity 0 when fading is desired
  		if (this.picker.getStyle('opacity') == 0) {
  			this.picker.tween('opacity', 0, 1);
  		}
  		
  		// animate
  		if ($chk(fx)) this.fx(fx);
  	},
  	
  	fx: function(fx) {
  		if (fx == 'right') {
  			this.oldContents.setStyles({ left: 0, opacity: 1 });
  			this.newContents.setStyles({ left: this.bodysize.x, opacity: 1 });
  			this.slider.setStyle('left', 0).tween('left', 0, -this.bodysize.x);
  		} else if (fx == 'left') {
  			this.oldContents.setStyles({ left: this.bodysize.x, opacity: 1 });
  			this.newContents.setStyles({ left: 0, opacity: 1 });
  			this.slider.setStyle('left', -this.bodysize.x).tween('left', -this.bodysize.x, 0);
  		} else if (fx == 'fade') {
  			this.slider.setStyle('left', 0);
  			this.oldContents.setStyle('left', 0).set('tween', { duration: this.options.animationDuration / 2 }).tween('opacity', 1, 0);
  			this.newContents.setStyles({ opacity: 0, left: 0}).set('tween', { duration: this.options.animationDuration }).tween('opacity', 0, 1);
  		}
  	},
  	
  	constructPicker: function() {
  		this.picker = new Element('div', { 'class': this.options.pickerClass }).inject(document.body);
  		if (this.options.useFadeInOut) {
  			this.picker.setStyle('opacity', 0).set('tween', { duration: this.options.animationDuration });
  		}
  		
  		var h = new Element('div', { 'class': 'header' }).inject(this.picker);
  		var titlecontainer = new Element('div', { 'class': 'title' }).inject(h);
  		new Element('div', { 'class': 'previous' }).addEvent('click', this.previous.bind(this)).set('text', '«').inject(h);
  		new Element('div', { 'class': 'next' }).addEvent('click', this.next.bind(this)).set('text', '»').inject(h);
  		new Element('div', { 'class': 'closeButton' }).addEvent('click', this.close.bindWithEvent(this, true)).set('text', 'x').inject(h);
  		new Element('span', { 'class': 'titleText' }).addEvent('click', this.zoomOut.bind(this)).inject(titlecontainer);
  		
  		var b = new Element('div', { 'class': 'body' }).inject(this.picker);
  		this.bodysize = b.getSize();
  		this.slider = new Element('div', { styles: { position: 'absolute', top: 0, left: 0, width: 2 * this.bodysize.x, height: this.bodysize.y }})
  					.set('tween', { duration: this.options.animationDuration, transition: Fx.Transitions.Quad.easeInOut }).inject(b);
  		this.oldContents = new Element('div', { styles: { position: 'absolute', top: 0, left: this.bodysize.x, width: this.bodysize.x, height: this.bodysize.y }}).inject(this.slider);
  		this.newContents = new Element('div', { styles: { position: 'absolute', top: 0, left: 0, width: this.bodysize.x, height: this.bodysize.y }}).inject(this.slider);
  	},
  	
  	renderTime: function() {
  		var container = new Element('div', { 'class': 'time' }).inject(this.newContents);
  		
  		if (this.options.timePickerOnly) {
  			this.picker.getElement('.titleText').set('text', 'Select a time');
  		} else {
  			this.picker.getElement('.titleText').set('text', this.format(this.d, 'j M, Y'));
  		}
  		
  		new Element('input', { type: 'text', 'class': 'hour' })
  			.set('value', this.leadZero(this.d.getHours()))
  			.addEvents({
  				mousewheel: function(e) {
  					var i = e.target, v = i.get('value').toInt();
  					i.focus();
  					if (e.wheel > 0) {
  						v = (v < 23) ? v + 1 : 0;
  					} else {
  						v = (v > 0) ? v - 1 : 23;
  					}
  					i.set('value', this.leadZero(v));
  					e.stop();
  				}.bind(this)
  			})
  			.set('maxlength', 2)
  			.inject(container);
  			
  		new Element('input', { type: 'text', 'class': 'minutes' })
  			.set('value', this.leadZero(this.d.getMinutes()))
  			.addEvents({
  				mousewheel: function(e) {
  					var i = e.target, v = i.get('value').toInt();
  					i.focus();
  					if (e.wheel > 0) {
  						v = (v < 59) ? v + 1 : 0;
  					} else {
  						v = (v > 0) ? v - 1 : 59;
  					}
  					i.set('value', this.leadZero(v));
  					e.stop();
  				}.bind(this)
  			})
  			.set('maxlength', 2)
  			.inject(container);
  		
  		new Element('div', { 'class': 'separator' }).set('text', ':').inject(container);
  		
  		new Element('input', { type: 'submit', value: 'OK', 'class': 'ok' })
  			.addEvents({
  				click: function(e) {
  					e.stop();
  					this.select($merge(this.dateToObject(this.d), { hours: this.picker.getElement('.hour').get('value').toInt(), minutes: this.picker.getElement('.minutes').get('value').toInt() }));
  				}.bind(this)
  			})
  			.set('maxlength', 2)
  			.inject(container);
  	},
  	
  	renderMonth: function() {
  		var month = this.d.getMonth();
  		
  		this.picker.getElement('.titleText').set('text', this.options.months[month] + ' ' + this.d.getFullYear());
  		
  		this.d.setDate(1);
  		while (this.d.getDay() != this.options.startDay) {
  			this.d.setDate(this.d.getDate() - 1);
  		}
  		
  		var container = new Element('div', { 'class': 'days' }).inject(this.newContents);
  		var titles = new Element('div', { 'class': 'titles' }).inject(container);
  		var d, i, classes, e, weekcontainer;
  
  		for (d = this.options.startDay; d < (this.options.startDay + 7); d++) {
  			new Element('div', { 'class': 'title day day' + (d % 7) }).set('text', this.options.days[(d % 7)].substring(0,this.options.dayShort)).inject(titles);
  		}
  		
  		var available = false;
  		var t = this.today.toDateString();
  		var currentChoice = this.dateFromObject(this.choice).toDateString();
  		
  		for (i = 0; i < 42; i++) {
  			classes = [];
  			classes.push('day');
  			classes.push('day'+this.d.getDay());
  			if (this.d.toDateString() == t) classes.push('today');
  			if (this.d.toDateString() == currentChoice) classes.push('selected');
  			if (this.d.getMonth() != month) classes.push('otherMonth');
  			
  			if (i % 7 == 0) {
  				weekcontainer = new Element('div', { 'class': 'week week'+(Math.floor(i/7)) }).inject(container);
  			}
  			
  			e = new Element('div', { 'class': classes.join(' ') }).set('text', this.d.getDate()).inject(weekcontainer);
  			if (this.limited('date')) {
  				e.addClass('unavailable');
  				if (available) {
  					this.limit.right = true;
  				} else if (this.d.getMonth() == month) {
  					this.limit.left = true;
  				}
  			} else {
  				available = true;
  				e.addEvent('click', function(e, d) {
  					if (this.options.timePicker) {
  						this.d.setDate(d.day);
  						this.d.setMonth(d.month);
  						this.mode = 'time';
  						this.render('fade');
  					} else {
  						this.select(d);
  					}
  				}.bindWithEvent(this, { day: this.d.getDate(), month: this.d.getMonth(), year: this.d.getFullYear() }));
  			}
  			this.d.setDate(this.d.getDate() + 1);
  		}
  		if (!available) this.limit.right = true;
  	},
  	
  	renderYear: function() {
  		var month = this.today.getMonth();
  		var thisyear = this.d.getFullYear() == this.today.getFullYear();
  		var selectedyear = this.d.getFullYear() == this.choice.year;
  		
  		this.picker.getElement('.titleText').set('text', this.d.getFullYear());
  		this.d.setMonth(0);
  		
  		var i, e;
  		var available = false;
  		var container = new Element('div', { 'class': 'months' }).inject(this.newContents);
  		
  		for (i = 0; i <= 11; i++) {
  			e = new Element('div', { 'class': 'month month'+(i+1)+(i == month && thisyear ? ' today' : '')+(i == this.choice.month && selectedyear ? ' selected' : '') })
  			.set('text', this.options.monthShort ? this.options.months[i].substring(0, this.options.monthShort) : this.options.months[i]).inject(container);
  			
  			if (this.limited('month')) {
  				e.addClass('unavailable');
  				if (available) {
  					this.limit.right = true;
  				} else {
  					this.limit.left = true;
  				}
  			} else {
  				available = true;
  				e.addEvent('click', function(e, d) {
  					this.d.setDate(1);
  					this.d.setMonth(d);
  					this.mode = 'month';
  					this.render('fade');
  				}.bindWithEvent(this, i));
  			}
  			this.d.setMonth(i);
  		}
  		if (!available) this.limit.right = true;
  	},
  	
  	renderDecades: function() {
  		// start neatly at interval (eg. 1980 instead of 1987)
  		while (this.d.getFullYear() % this.options.yearsPerPage > 0) {
  			this.d.setFullYear(this.d.getFullYear() - 1);
  		}
  
  		this.picker.getElement('.titleText').set('text', this.d.getFullYear() + '-' + (this.d.getFullYear() + this.options.yearsPerPage - 1));
  		
  		var i, y, e;
  		var available = false;
  		var container = new Element('div', { 'class': 'years' }).inject(this.newContents);
  		
  		if ($chk(this.options.minDate) && this.d.getFullYear() <= this.options.minDate.getFullYear()) {
  			this.limit.left = true;
  		}
  		
  		for (i = 0; i < this.options.yearsPerPage; i++) {
  			y = this.d.getFullYear();
  			e = new Element('div', { 'class': 'year year' + i + (y == this.today.getFullYear() ? ' today' : '') + (y == this.choice.year ? ' selected' : '') }).set('text', y).inject(container);
  			
  			if (this.limited('year')) {
  				e.addClass('unavailable');
  				if (available) {
  					this.limit.right = true;
  				} else {
  					this.limit.left = true;
  				}
  			} else {
  				available = true;
  				e.addEvent('click', function(e, d) {
  					this.d.setFullYear(d);
  					this.mode = 'year';
  					this.render('fade');
  				}.bindWithEvent(this, y));
  			}
  			this.d.setFullYear(this.d.getFullYear() + 1);
  		}
  		if (!available) {
  			this.limit.right = true;
  		}
  		if ($chk(this.options.maxDate) && this.d.getFullYear() >= this.options.maxDate.getFullYear()) {
  			this.limit.right = true;
  		}
  	},
  	
  	limited: function(type) {
  		var cs = $chk(this.options.minDate);
  		var ce = $chk(this.options.maxDate);
  		if (!cs && !ce) return false;
  		
  		switch (type) {
  			case 'year':
  				return (cs && this.d.getFullYear() < this.options.minDate.getFullYear()) || (ce && this.d.getFullYear() > this.options.maxDate.getFullYear());
  				
  			case 'month':
  				// todo: there has got to be an easier way...?
  				var ms = ('' + this.d.getFullYear() + this.leadZero(this.d.getMonth())).toInt();
  				return cs && ms < ('' + this.options.minDate.getFullYear() + this.leadZero(this.options.minDate.getMonth())).toInt()
  					|| ce && ms > ('' + this.options.maxDate.getFullYear() + this.leadZero(this.options.maxDate.getMonth())).toInt()
  				
  			case 'date':
  				return (cs && this.d < this.options.minDate) || (ce && this.d > this.options.maxDate);
  		}
  	},
  	
  	allowZoomOut: function() {
  		if (this.mode == 'time' && this.options.timePickerOnly) return false;
  		if (this.mode == 'decades') return false;
  		if (this.mode == 'year' && !this.options.yearPicker) return false;
  		return true;
  	},
  	
  	zoomOut: function() {
  		if (!this.allowZoomOut()) return;
  		if (this.mode == 'year') {
  			this.mode = 'decades';
  		} else if (this.mode == 'time') {
  			this.mode = 'month';
  		} else {
  			this.mode = 'year';
  		}
  		this.render('fade');
  	},
  	
  	previous: function() {
  		if (this.mode == 'decades') {
  			this.d.setFullYear(this.d.getFullYear() - this.options.yearsPerPage);
  		} else if (this.mode == 'year') {
  			this.d.setFullYear(this.d.getFullYear() - 1);
  		} else if (this.mode == 'month') {
  			this.d.setMonth(this.d.getMonth() - 1);
  		}
  		this.render('left');
  	},
  	
  	next: function() {
  		if (this.mode == 'decades') {
  			this.d.setFullYear(this.d.getFullYear() + this.options.yearsPerPage);
  		} else if (this.mode == 'year') {
  			this.d.setFullYear(this.d.getFullYear() + 1);
  		} else if (this.mode == 'month') {
  			this.d.setMonth(this.d.getMonth() + 1);
  		}
  		this.render('right');
  	},
  	
  	close: function(e, force) {
  		if (!$(this.picker)) return;
  		var clickOutside = ($chk(e) && e.target != this.picker && !this.picker.hasChild(e.target) && e.target != this.visual);
  		if (force || clickOutside) {
  			if (this.options.useFadeInOut) {
  				this.picker.set('tween', { duration: this.options.animationDuration / 2, onComplete: this.destroy.bind(this) }).tween('opacity', 1, 0);
  			} else {
  				this.destroy();
  			}
  		}
  	},
  	
  	destroy: function() {
  		this.picker.destroy();
  		this.picker = null;
  		this.options.onClose();
  	},
  	
  	select: function(values) {
  		this.choice = $merge(this.choice, values);
  		var d = this.dateFromObject(this.choice);
  		this.input.set('value', this.format(d, this.options.inputOutputFormat));
  		this.visual.set('value', this.format(d, this.options.format));
  		this.options.onSelect(d);
  		this.close(null, true);
  	},
  	
  	leadZero: function(v) {
  		return v < 10 ? '0'+v : v;
  	},
  	
  	format: function(t, format) {
  		var f = '';
  		var h = t.getHours();
  		var m = t.getMonth();
  		
  		for (var i = 0; i < format.length; i++) {
  			switch(format.charAt(i)) {
  				case '\\': i++; f+= format.charAt(i); break;
  				case 'y': f += (t.getFullYear() + '').substring(2); break;
  				case 'Y': f += t.getFullYear(); break;
  				case 'm': f += this.leadZero(m + 1); break;
  				case 'n': f += (m + 1); break;
  				case 'M': f += this.options.months[m].substring(0,this.options.monthShort); break;
  				case 'F': f += this.options.months[m]; break;
  				case 'd': f += this.leadZero(t.getDate()); break;
  				case 'j': f += t.getDate(); break;
  				case 'D': f += this.options.days[t.getDay()].substring(0,this.options.dayShort); break;
  				case 'l': f += this.options.days[t.getDay()]; break;
  				case 'G': f += h; break;
  				case 'H': f += this.leadZero(h); break;
  				case 'g': f += (h % 12 ? h % 12 : 12); break;
  				case 'h': f += this.leadZero(h % 12 ? h % 12 : 12); break;
  				case 'a': f += (h > 11 ? 'pm' : 'am'); break;
  				case 'A': f += (h > 11 ? 'PM' : 'AM'); break;
  				case 'i': f += this.leadZero(t.getMinutes()); break;
  				case 's': f += this.leadZero(t.getSeconds()); break;
  				case 'U': f += Math.floor(t.valueOf() / 1000); break;
  				default:  f += format.charAt(i);
  			}
  		}
  		return f;
  	},
  	
  	unformat: function(t, format) {
  		var d = new Date();
  		var a = {};
  		var c, m;
  		t = t.toString();
  		
  		for (var i = 0; i < format.length; i++) {
  			c = format.charAt(i);
  			switch(c) {
  				case '\\': r = null; i++; break;
  				case 'y': r = '[0-9]{2}'; break;
  				case 'Y': r = '[0-9]{4}'; break;
  				case 'm': r = '0[1-9]|1[012]'; break;
  				case 'n': r = '[1-9]|1[012]'; break;
  				case 'M': r = '[A-Za-z]{'+this.options.monthShort+'}'; break;
  				case 'F': r = '[A-Za-z]+'; break;
  				case 'd': r = '0[1-9]|[12][0-9]|3[01]'; break;
  				case 'j': r = '[1-9]|[12][0-9]|3[01]'; break;
  				case 'D': r = '[A-Za-z]{'+this.options.dayShort+'}'; break;
  				case 'l': r = '[A-Za-z]+'; break;
  				case 'G': 
  				case 'H': 
  				case 'g': 
  				case 'h': r = '[0-9]{1,2}'; break;
  				case 'a': r = '(am|pm)'; break;
  				case 'A': r = '(AM|PM)'; break;
  				case 'i': 
  				case 's': r = '[012345][0-9]'; break;
  				case 'U': r = '-?[0-9]+$'; break;
  				default:  r = null;
  			}
  			
  			if ($chk(r)) {
  				m = t.match('^'+r);
  				if ($chk(m)) {
  					a[c] = m[0];
  					t = t.substring(a[c].length);
  				} else {
  					if (this.options.debug) alert("Fatal Error in DatePicker\n\nUnexpected format at: '"+t+"' expected format character '"+c+"' (pattern '"+r+"')");
  					return d;
  				}
  			} else {
  				t = t.substring(1);
  			}
  		}
  		
  		for (c in a) {
  			var v = a[c];
  			switch(c) {
  				case 'y': d.setFullYear(v < 30 ? 2000 + v.toInt() : 1900 + v.toInt()); break; // assume between 1930 - 2029
  				case 'Y': d.setFullYear(v); break;
  				case 'm':
  				case 'n': d.setMonth(v - 1); break;
  				// FALL THROUGH NOTICE! "M" has no break, because "v" now is the full month (eg. 'February'), which will work with the next format "F":
  				case 'M': v = this.options.months.filter(function(item, index) { return item.substring(0,this.options.monthShort) == v }.bind(this))[0];
  				case 'F': d.setMonth(this.options.months.indexOf(v)); break;
  				case 'd':
  				case 'j': d.setDate(v); break;
  				case 'G': 
  				case 'H': d.setHours(v); break;
  				case 'g': 
  				case 'h': if (a['a'] == 'pm' || a['A'] == 'PM') { d.setHours(v == 12 ? 0 : v.toInt() + 12); } else { d.setHours(v); } break;
  				case 'i': d.setMinutes(v); break;
  				case 's': d.setSeconds(v); break;
  				case 'U': d = new Date(v.toInt() * 1000);
  			}
  		};
  		
  		return d;
  	}
  });