text: /**
   * jqPlot
   * Pure JavaScript plotting plugin using jQuery
   *
   * Version: @VERSION
   *
   * Copyright (c) 2009-2011 Chris Leonello
   * jqPlot is currently available for use in all personal or commercial projects 
   * under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL 
   * version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can 
   * choose the license that best suits your project and use it accordingly. 
   *
   * Although not required, the author would appreciate an email letting him 
   * know of any substantial use of jqPlot.  You can reach the author at: 
   * chris at jqplot dot com or see http://www.jqplot.com/info.php .
   *
   * If you are feeling kind and generous, consider supporting the project by
   * making a donation at: http://www.jqplot.com/donate.php .
   *
   * sprintf functions contained in jqplot.sprintf.js by Ash Searle:
   *
   *     version 2007.04.27
   *     author Ash Searle
   *     http://hexmen.com/blog/2007/03/printf-sprintf/
   *     http://hexmen.com/js/sprintf.js
   *     The author (Ash Searle) has placed this code in the public domain:
   *     "This code is unrestricted: you are free to use it however you like."
   * 
   */
  (function($) {
      
      /**
       * Class: $.jqplot.Cursor
       * Plugin class representing the cursor as displayed on the plot.
       */
      $.jqplot.Cursor = function(options) {
          // Group: Properties
          //
          // prop: style
          // CSS spec for cursor style
          this.style = 'crosshair';
          this.previousCursor = 'auto';
          // prop: show
          // wether to show the cursor or not.
          this.show = $.jqplot.config.enablePlugins;
          // prop: showTooltip
          // show a cursor position tooltip.  Location of the tooltip
          // will be controlled by followMouse and tooltipLocation.
          this.showTooltip = true;
          // prop: followMouse
          // Tooltip follows the mouse, it is not at a fixed location.
          // Tooltip will show on the grid at the location given by
          // tooltipLocation, offset from the grid edge by tooltipOffset.
          this.followMouse = false;
          // prop: tooltipLocation
          // Where to position tooltip.  If followMouse is true, this is
          // relative to the cursor, otherwise, it is relative to the grid.
          // One of 'n', 'ne', 'e', 'se', 's', 'sw', 'w', 'nw'
          this.tooltipLocation = 'se';
          // prop: tooltipOffset
          // Pixel offset of tooltip from the grid boudaries or cursor center.
          this.tooltipOffset = 6;
          // prop: showTooltipGridPosition
          // show the grid pixel coordinates of the mouse.
          this.showTooltipGridPosition = false;
          // prop: showTooltipUnitPosition
          // show the unit (data) coordinates of the mouse.
          this.showTooltipUnitPosition = true;
          // prop: showTooltipDataPosition
          // Used with showVerticalLine to show intersecting data points in the tooltip.
          this.showTooltipDataPosition = false;
          // prop: tooltipFormatString
          // sprintf format string for the tooltip.
          // Uses Ash Searle's javascript sprintf implementation
          // found here: http://hexmen.com/blog/2007/03/printf-sprintf/
          // See http://perldoc.perl.org/functions/sprintf.html for reference
          // Note, if showTooltipDataPosition is true, the default tooltipFormatString
          // will be set to the cursorLegendFormatString, not the default given here.
          this.tooltipFormatString = '%.4P, %.4P';
          // prop: useAxesFormatters
          // Use the x and y axes formatters to format the text in the tooltip.
          this.useAxesFormatters = true;
          // prop: tooltipAxisGroups
          // Show position for the specified axes.
          // This is an array like [['xaxis', 'yaxis'], ['xaxis', 'y2axis']]
          // Default is to compute automatically for all visible axes.
          this.tooltipAxisGroups = [];
          // prop: zoom
          // Enable plot zooming.
          this.zoom = false;
          // zoomProxy and zoomTarget properties are not directly set by user.  
          // They Will be set through call to zoomProxy method.
          this.zoomProxy = false;
          this.zoomTarget = false;
          // prop: clickReset
          // Will reset plot zoom if single click on plot without drag.
          this.clickReset = false;
          // prop: dblClickReset
          // Will reset plot zoom if double click on plot without drag.
          this.dblClickReset = true;
          // prop: showVerticalLine
          // draw a vertical line across the plot which follows the cursor.
          // When the line is near a data point, a special legend and/or tooltip can
          // be updated with the data values.
          this.showVerticalLine = false;
          // prop: showHorizontalLine
          // draw a horizontal line across the plot which follows the cursor.
          this.showHorizontalLine = false;
          // prop: constrainZoomTo
          // 'none', 'x' or 'y'
          this.constrainZoomTo = 'none';
          // // prop: autoscaleConstraint
          // // when a constrained axis is specified, true will
          // // auatoscale the adjacent axis.
          // this.autoscaleConstraint = true;
          this.shapeRenderer = new $.jqplot.ShapeRenderer();
          this._zoom = {start:[], end:[], started: false, zooming:false, isZoomed:false, axes:{start:{}, end:{}}, gridpos:{}, datapos:{}};
          this._tooltipElem;
          this.zoomCanvas;
          this.cursorCanvas;
          // prop: intersectionThreshold
          // pixel distance from data point or marker to consider cursor lines intersecting with point.
          // If data point markers are not shown, this should be >= 1 or will often miss point intersections.
          this.intersectionThreshold = 2;
          // prop: showCursorLegend
          // Replace the plot legend with an enhanced legend displaying intersection information.
          this.showCursorLegend = false;
          // prop: cursorLegendFormatString
          // Format string used in the cursor legend.  If showTooltipDataPosition is true,
          // this will also be the default format string used by tooltipFormatString.
          this.cursorLegendFormatString = $.jqplot.Cursor.cursorLegendFormatString;
          // whether the cursor is over the grid or not.
          this._oldHandlers = {onselectstart: null, ondrag: null, onmousedown: null};
          // prop: constrainOutsideZoom
          // True to limit actual zoom area to edges of grid, even when zooming
          // outside of plot area.  That is, can't zoom out by mousing outside plot.
          this.constrainOutsideZoom = true;
          // prop: showTooltipOutsideZoom
          // True will keep updating the tooltip when zooming of the grid.
          this.showTooltipOutsideZoom = false;
          // true if mouse is over grid, false if not.
          this.onGrid = false;
          $.extend(true, this, options);
      };
      
      $.jqplot.Cursor.cursorLegendFormatString = '%s x:%s, y:%s';
      
      // called with scope of plot
      $.jqplot.Cursor.init = function (target, data, opts){
          // add a cursor attribute to the plot
          var options = opts || {};
          this.plugins.cursor = new $.jqplot.Cursor(options.cursor);
          var c = this.plugins.cursor;
  
          if (c.show) {
              $.jqplot.eventListenerHooks.push(['jqplotMouseEnter', handleMouseEnter]);
              $.jqplot.eventListenerHooks.push(['jqplotMouseLeave', handleMouseLeave]);
              $.jqplot.eventListenerHooks.push(['jqplotMouseMove', handleMouseMove]);
              
              if (c.showCursorLegend) {              
                  opts.legend = opts.legend || {};
                  opts.legend.renderer =  $.jqplot.CursorLegendRenderer;
                  opts.legend.formatString = this.plugins.cursor.cursorLegendFormatString;
                  opts.legend.show = true;
              }
              
              if (c.zoom) {
                  $.jqplot.eventListenerHooks.push(['jqplotMouseDown', handleMouseDown]);
                  
                  if (c.clickReset) {
                      $.jqplot.eventListenerHooks.push(['jqplotClick', handleClick]);
                  }
                  
                  if (c.dblClickReset) {
                      $.jqplot.eventListenerHooks.push(['jqplotDblClick', handleDblClick]);
                  }             
              }
      
              this.resetZoom = function() {
                  var axes = this.axes;
                  if (!c.zoomProxy) {
                      for (var ax in axes) {
                          axes[ax].reset();
                      }
                      this.redraw();
                  }
                  else {
                      var ctx = this.plugins.cursor.zoomCanvas._ctx;
                      ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
                      ctx = null;
                  }
                  this.plugins.cursor._zoom.isZoomed = false;
                  this.target.trigger('jqplotResetZoom', [this, this.plugins.cursor]);
              };
              
  
              if (c.showTooltipDataPosition) {
                  c.showTooltipUnitPosition = false;
                  c.showTooltipGridPosition = false;
                  if (options.cursor.tooltipFormatString == undefined) {
                      c.tooltipFormatString = $.jqplot.Cursor.cursorLegendFormatString;
                  }
              }
          }
      };
      
      // called with context of plot
      $.jqplot.Cursor.postDraw = function() {
          var c = this.plugins.cursor;
          // if (c.zoom) {
          c.zoomCanvas = new $.jqplot.GenericCanvas();
          this.eventCanvas._elem.before(c.zoomCanvas.createElement(this._gridPadding, 'jqplot-zoom-canvas', this._plotDimensions));
          c.zoomCanvas.setContext();
          // }
          c._tooltipElem = $('<div class="jqplot-cursor-tooltip" style="position:absolute;display:none"></div>');
          c.zoomCanvas._elem.before(c._tooltipElem);
          if (c.showVerticalLine || c.showHorizontalLine) {
              c.cursorCanvas = new $.jqplot.GenericCanvas();
              this.eventCanvas._elem.before(c.cursorCanvas.createElement(this._gridPadding, 'jqplot-cursor-canvas', this._plotDimensions));
              c.cursorCanvas.setContext();
          }
  
          // if we are showing the positions in unit coordinates, and no axes groups
          // were specified, create a default set.
          if (c.showTooltipUnitPosition){
              if (c.tooltipAxisGroups.length === 0) {
                  var series = this.series;
                  var s;
                  var temp = [];
                  for (var i=0; i<series.length; i++) {
                      s = series[i];
                      var ax = s.xaxis+','+s.yaxis;
                      if ($.inArray(ax, temp) == -1) {
                          temp.push(ax);
                      }
                  }
                  for (var i=0; i<temp.length; i++) {
                      c.tooltipAxisGroups.push(temp[i].split(','));
                  }
              }
          }
      };
      
      // Group: methods
      //
      // method: $.jqplot.Cursor.zoomProxy
      // links targetPlot to controllerPlot so that plot zooming of
      // targetPlot will be controlled by zooming on the controllerPlot.
      // controllerPlot will not actually zoom, but acts as an
      // overview plot.  Note, the zoom options must be set to true for
      // zoomProxy to work.
      $.jqplot.Cursor.zoomProxy = function(targetPlot, controllerPlot) {
          var tc = targetPlot.plugins.cursor;
          var cc = controllerPlot.plugins.cursor;
          tc.zoomTarget = true;
          tc.zoom = true;
          tc.style = 'auto';
          tc.dblClickReset = false;
          cc.zoom = true;
          cc.zoomProxy = true;
                
          controllerPlot.target.bind('jqplotZoom', plotZoom);
          controllerPlot.target.bind('jqplotResetZoom', plotReset);
  
          function plotZoom(ev, gridpos, datapos, plot, cursor) {
              tc.doZoom(gridpos, datapos, targetPlot, cursor);
          } 
  
          function plotReset(ev, plot, cursor) {
              targetPlot.resetZoom();
          }
      };
      
      $.jqplot.Cursor.prototype.resetZoom = function(plot, cursor) {
          var axes = plot.axes;
          var cax = cursor._zoom.axes;
          if (!plot.plugins.cursor.zoomProxy && cursor._zoom.isZoomed) {
              for (var ax in axes) {
                  axes[ax]._ticks = [];
                  axes[ax].min = cax[ax].min;
                  axes[ax].max = cax[ax].max;
                  axes[ax].numberTicks = cax[ax].numberTicks; 
                  axes[ax].tickInterval = cax[ax].tickInterval;
                  // for date axes
                  axes[ax].daTickInterval = cax[ax].daTickInterval;
              }
              plot.redraw();
              cursor._zoom.isZoomed = false;
          }
          else {
              var ctx = cursor.zoomCanvas._ctx;
              ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
              ctx = null;
          }
          plot.target.trigger('jqplotResetZoom', [plot, cursor]);
      };
      
      $.jqplot.Cursor.resetZoom = function(plot) {
          plot.resetZoom();
      };
      
      $.jqplot.Cursor.prototype.doZoom = function (gridpos, datapos, plot, cursor) {
          var c = cursor;
          var axes = plot.axes;
          var zaxes = c._zoom.axes;
          var start = zaxes.start;
          var end = zaxes.end;
          var min, max, dp, span;
          var ctx = plot.plugins.cursor.zoomCanvas._ctx;
          // don't zoom is zoom area is too small (in pixels)
          if ((c.constrainZoomTo == 'none' && Math.abs(gridpos.x - c._zoom.start[0]) > 6 && Math.abs(gridpos.y - c._zoom.start[1]) > 6) || (c.constrainZoomTo == 'x' && Math.abs(gridpos.x - c._zoom.start[0]) > 6) ||  (c.constrainZoomTo == 'y' && Math.abs(gridpos.y - c._zoom.start[1]) > 6)) {
              if (!plot.plugins.cursor.zoomProxy) {
                  for (var ax in datapos) {
                      // make a copy of the original axes to revert back.
                      if (c._zoom.axes[ax] == undefined) {
                          c._zoom.axes[ax] = {};
                          c._zoom.axes[ax].numberTicks = axes[ax].numberTicks;
                          c._zoom.axes[ax].tickInterval = axes[ax].tickInterval;
                          // for date axes...
                          c._zoom.axes[ax].daTickInterval = axes[ax].daTickInterval;
                          c._zoom.axes[ax].min = axes[ax].min;
                          c._zoom.axes[ax].max = axes[ax].max;
                      }
                      if ((c.constrainZoomTo == 'none') || (c.constrainZoomTo == 'x' && ax.charAt(0) == 'x') || (c.constrainZoomTo == 'y' && ax.charAt(0) == 'y')) {   
                          dp = datapos[ax];
                          if (dp != null) {           
                              if (dp > start[ax]) { 
                                  axes[ax].min = start[ax];
                                  axes[ax].max = dp;
                              }
                              else {
                                  span = start[ax] - dp;
                                  axes[ax].max = start[ax];
                                  axes[ax].min = dp;
                              }
                              axes[ax].tickInterval = null;
                              // for date axes...
                              axes[ax].daTickInterval = null;
                              axes[ax]._ticks = [];
                          }
                      }
                              
                      // if ((c.constrainZoomTo == 'x' && ax.charAt(0) == 'y' && c.autoscaleConstraint) || (c.constrainZoomTo == 'y' && ax.charAt(0) == 'x' && c.autoscaleConstraint)) {
                      //     dp = datapos[ax];
                      //     if (dp != null) {
                      //         axes[ax].max == null;
                      //         axes[ax].min = null;
                      //     }
                      // }
                  }
                  ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
                  plot.redraw();
                  c._zoom.isZoomed = true;
                  ctx = null;
              }
              plot.target.trigger('jqplotZoom', [gridpos, datapos, plot, cursor]);
          }
      };
      
      $.jqplot.preInitHooks.push($.jqplot.Cursor.init);
      $.jqplot.postDrawHooks.push($.jqplot.Cursor.postDraw);
      
      function updateTooltip(gridpos, datapos, plot) {
          var c = plot.plugins.cursor;
          var s = '';
          var addbr = false;
          if (c.showTooltipGridPosition) {
              s = gridpos.x+', '+gridpos.y;
              addbr = true;
          }
          if (c.showTooltipUnitPosition) {
              var g;
              for (var i=0; i<c.tooltipAxisGroups.length; i++) {
                  g = c.tooltipAxisGroups[i];
                  if (addbr) {
                      s += '<br />';
                  }
                  if (c.useAxesFormatters) {
                      var xf = plot.axes[g[0]]._ticks[0].formatter;
                      var yf = plot.axes[g[1]]._ticks[0].formatter;
                      var xfstr = plot.axes[g[0]]._ticks[0].formatString;
                      var yfstr = plot.axes[g[1]]._ticks[0].formatString;
                      s += xf(xfstr, datapos[g[0]]) + ', '+ yf(yfstr, datapos[g[1]]);
                  }
                  else {
                      s += $.jqplot.sprintf(c.tooltipFormatString, datapos[g[0]], datapos[g[1]]);
                  }
                  addbr = true;
              }
          }
          
          if (c.showTooltipDataPosition) {
              var series = plot.series; 
              var ret = getIntersectingPoints(plot, gridpos.x, gridpos.y);
              var addbr = false;
          
              for (var i = 0; i< series.length; i++) {
                  if (series[i].show) {
                      var idx = series[i].index;
                      var label = series[i].label.toString();
                      var cellid = $.inArray(idx, ret.indices);
                      var sx = undefined;
                      var sy = undefined;
                      if (cellid != -1) {
                          var data = ret.data[cellid].data;
                          if (c.useAxesFormatters) {
                              var xf = series[i]._xaxis._ticks[0].formatter;
                              var yf = series[i]._yaxis._ticks[0].formatter;
                              var xfstr = series[i]._xaxis._ticks[0].formatString;
                              var yfstr = series[i]._yaxis._ticks[0].formatString;
                              sx = xf(xfstr, data[0]);
                              sy = yf(yfstr, data[1]);
                          }
                          else {
                              sx = data[0];
                              sy = data[1];
                          }
                          if (addbr) {
                              s += '<br />';
                          }
                          s += $.jqplot.sprintf(c.tooltipFormatString, label, sx, sy);
                          addbr = true;
                      }
                  }
              }
              
          }
          c._tooltipElem.html(s);
      }
      
      function moveLine(gridpos, plot) {
          var c = plot.plugins.cursor;
          var ctx = c.cursorCanvas._ctx;
          ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
          if (c.showVerticalLine) {
              c.shapeRenderer.draw(ctx, [[gridpos.x, 0], [gridpos.x, ctx.canvas.height]]);
          }
          if (c.showHorizontalLine) {
              c.shapeRenderer.draw(ctx, [[0, gridpos.y], [ctx.canvas.width, gridpos.y]]);
          }
          var ret = getIntersectingPoints(plot, gridpos.x, gridpos.y);
          if (c.showCursorLegend) {
              var cells = $(plot.targetId + ' td.jqplot-cursor-legend-label');
              for (var i=0; i<cells.length; i++) {
                  var idx = $(cells[i]).data('seriesIndex');
                  var series = plot.series[idx];
                  var label = series.label.toString();
                  var cellid = $.inArray(idx, ret.indices);
                  var sx = undefined;
                  var sy = undefined;
                  if (cellid != -1) {
                      var data = ret.data[cellid].data;
                      if (c.useAxesFormatters) {
                          var xf = series._xaxis._ticks[0].formatter;
                          var yf = series._yaxis._ticks[0].formatter;
                          var xfstr = series._xaxis._ticks[0].formatString;
                          var yfstr = series._yaxis._ticks[0].formatString;
                          sx = xf(xfstr, data[0]);
                          sy = yf(yfstr, data[1]);
                      }
                      else {
                          sx = data[0];
                          sy = data[1];
                      }
                  }
                  if (plot.legend.escapeHtml) {
                      $(cells[i]).text($.jqplot.sprintf(c.cursorLegendFormatString, label, sx, sy));
                  }
                  else {
                      $(cells[i]).html($.jqplot.sprintf(c.cursorLegendFormatString, label, sx, sy));
                  }
              }        
          }
          ctx = null;
      }
          
      function getIntersectingPoints(plot, x, y) {
          var ret = {indices:[], data:[]};
          var s, i, d0, d, j, r, p;
          var threshold;
          var c = plot.plugins.cursor;
          for (var i=0; i<plot.series.length; i++) {
              s = plot.series[i];
              r = s.renderer;
              if (s.show) {
                  threshold = c.intersectionThreshold;
                  if (s.showMarker) {
                      threshold += s.markerRenderer.size/2;
                  }
                  for (var j=0; j<s.gridData.length; j++) {
                      p = s.gridData[j];
                      // check vertical line
                      if (c.showVerticalLine) {
                          if (Math.abs(x-p[0]) <= threshold) {
                              ret.indices.push(i);
                              ret.data.push({seriesIndex: i, pointIndex:j, gridData:p, data:s.data[j]});
                          }
                      }
                  } 
              }
          }
          return ret;
      }
      
      function moveTooltip(gridpos, plot) {
          var c = plot.plugins.cursor;  
          var elem = c._tooltipElem;
          switch (c.tooltipLocation) {
              case 'nw':
                  var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - c.tooltipOffset;
                  var y = gridpos.y + plot._gridPadding.top - c.tooltipOffset - elem.outerHeight(true);
                  break;
              case 'n':
                  var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true)/2;
                  var y = gridpos.y + plot._gridPadding.top - c.tooltipOffset - elem.outerHeight(true);
                  break;
              case 'ne':
                  var x = gridpos.x + plot._gridPadding.left + c.tooltipOffset;
                  var y = gridpos.y + plot._gridPadding.top - c.tooltipOffset - elem.outerHeight(true);
                  break;
              case 'e':
                  var x = gridpos.x + plot._gridPadding.left + c.tooltipOffset;
                  var y = gridpos.y + plot._gridPadding.top - elem.outerHeight(true)/2;
                  break;
              case 'se':
                  var x = gridpos.x + plot._gridPadding.left + c.tooltipOffset;
                  var y = gridpos.y + plot._gridPadding.top + c.tooltipOffset;
                  break;
              case 's':
                  var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true)/2;
                  var y = gridpos.y + plot._gridPadding.top + c.tooltipOffset;
                  break;
              case 'sw':
                  var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - c.tooltipOffset;
                  var y = gridpos.y + plot._gridPadding.top + c.tooltipOffset;
                  break;
              case 'w':
                  var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - c.tooltipOffset;
                  var y = gridpos.y + plot._gridPadding.top - elem.outerHeight(true)/2;
                  break;
              default:
                  var x = gridpos.x + plot._gridPadding.left + c.tooltipOffset;
                  var y = gridpos.y + plot._gridPadding.top + c.tooltipOffset;
                  break;
          }
              
          elem.css('left', x);
          elem.css('top', y);
  	    elem = null;
      }
      
      function positionTooltip(plot) { 
          // fake a grid for positioning
          var grid = plot._gridPadding; 
          var c = plot.plugins.cursor;
          var elem = c._tooltipElem;  
          switch (c.tooltipLocation) {
              case 'nw':
                  var a = grid.left + c.tooltipOffset;
                  var b = grid.top + c.tooltipOffset;
                  elem.css('left', a);
                  elem.css('top', b);
                  break;
              case 'n':
                  var a = (grid.left + (plot._plotDimensions.width - grid.right))/2 - elem.outerWidth(true)/2;
                  var b = grid.top + c.tooltipOffset;
                  elem.css('left', a);
                  elem.css('top', b);
                  break;
              case 'ne':
                  var a = grid.right + c.tooltipOffset;
                  var b = grid.top + c.tooltipOffset;
                  elem.css({right:a, top:b});
                  break;
              case 'e':
                  var a = grid.right + c.tooltipOffset;
                  var b = (grid.top + (plot._plotDimensions.height - grid.bottom))/2 - elem.outerHeight(true)/2;
                  elem.css({right:a, top:b});
                  break;
              case 'se':
                  var a = grid.right + c.tooltipOffset;
                  var b = grid.bottom + c.tooltipOffset;
                  elem.css({right:a, bottom:b});
                  break;
              case 's':
                  var a = (grid.left + (plot._plotDimensions.width - grid.right))/2 - elem.outerWidth(true)/2;
                  var b = grid.bottom + c.tooltipOffset;
                  elem.css({left:a, bottom:b});
                  break;
              case 'sw':
                  var a = grid.left + c.tooltipOffset;
                  var b = grid.bottom + c.tooltipOffset;
                  elem.css({left:a, bottom:b});
                  break;
              case 'w':
                  var a = grid.left + c.tooltipOffset;
                  var b = (grid.top + (plot._plotDimensions.height - grid.bottom))/2 - elem.outerHeight(true)/2;
                  elem.css({left:a, top:b});
                  break;
              default:  // same as 'se'
                  var a = grid.right - c.tooltipOffset;
                  var b = grid.bottom + c.tooltipOffset;
                  elem.css({right:a, bottom:b});
                  break;
          }
          elem = null;
      }
      
      function handleClick (ev, gridpos, datapos, neighbor, plot) {
          ev.preventDefault();
          ev.stopImmediatePropagation();
          var c = plot.plugins.cursor;
          if (c.clickReset) {
              c.resetZoom(plot, c);
          }
          var sel = window.getSelection;
          if (document.selection && document.selection.empty)
          {
              document.selection.empty();
          }
          else if (sel && !sel().isCollapsed) {
              sel().collapse();
          }
          return false;
      }
      
      function handleDblClick (ev, gridpos, datapos, neighbor, plot) {
          ev.preventDefault();
          ev.stopImmediatePropagation();
          var c = plot.plugins.cursor;
          if (c.dblClickReset) {
              c.resetZoom(plot, c);
          }
          var sel = window.getSelection;
          if (document.selection && document.selection.empty)
          {
              document.selection.empty();
          }
          else if (sel && !sel().isCollapsed) {
              sel().collapse();
          }
          return false;
      }
      
      function handleMouseLeave(ev, gridpos, datapos, neighbor, plot) {
          var c = plot.plugins.cursor;
          c.onGrid = false;
          if (c.show) {
              $(ev.target).css('cursor', c.previousCursor);
              if (c.showTooltip && !(c._zoom.zooming && c.showTooltipOutsideZoom && !c.constrainOutsideZoom)) {
                  c._tooltipElem.hide();
              }
              if (c.zoom) {
                  c._zoom.gridpos = gridpos;
                  c._zoom.datapos = datapos;
              }
              if (c.showVerticalLine || c.showHorizontalLine) {
                  var ctx = c.cursorCanvas._ctx;
                  ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
                  ctx = null;
              }
              if (c.showCursorLegend) {
                  var cells = $(plot.targetId + ' td.jqplot-cursor-legend-label');
                  for (var i=0; i<cells.length; i++) {
                      var idx = $(cells[i]).data('seriesIndex');
                      var series = plot.series[idx];
                      var label = series.label.toString();
                      if (plot.legend.escapeHtml) {
                          $(cells[i]).text($.jqplot.sprintf(c.cursorLegendFormatString, label, undefined, undefined));
                      }
                      else {
                          $(cells[i]).html($.jqplot.sprintf(c.cursorLegendFormatString, label, undefined, undefined));
                      }
                  
                  }        
              }
          }
      }
      
      function handleMouseEnter(ev, gridpos, datapos, neighbor, plot) {
          var c = plot.plugins.cursor;
          c.onGrid = true;
          if (c.show) {
              c.previousCursor = ev.target.style.cursor;
              ev.target.style.cursor = c.style;
              if (c.showTooltip) {
                  updateTooltip(gridpos, datapos, plot);
                  if (c.followMouse) {
                      moveTooltip(gridpos, plot);
                  }
                  else {
                      positionTooltip(plot);
                  }
                  c._tooltipElem.show();
              }
              if (c.showVerticalLine || c.showHorizontalLine) {
                  moveLine(gridpos, plot);
              }
          }
  
      }    
      
      function handleMouseMove(ev, gridpos, datapos, neighbor, plot) {
          var c = plot.plugins.cursor;
          var ctx = c.zoomCanvas._ctx;
          if (c.show) {
              if (c.showTooltip) {
                  updateTooltip(gridpos, datapos, plot);
                  if (c.followMouse) {
                      moveTooltip(gridpos, plot);
                  }
              }
              if (c.showVerticalLine || c.showHorizontalLine) {
                  moveLine(gridpos, plot);
              }
          }
          ctx = null;
      }
              
      function getEventPosition(ev) {
          var plot = ev.data.plot;
          var go = plot.eventCanvas._elem.offset();
          var gridPos = {x:ev.pageX - go.left, y:ev.pageY - go.top};
          var dataPos = {xaxis:null, yaxis:null, x2axis:null, y2axis:null, y3axis:null, y4axis:null, y5axis:null, y6axis:null, y7axis:null, y8axis:null, y9axis:null};
          var an = ['xaxis', 'yaxis', 'x2axis', 'y2axis', 'y3axis', 'y4axis', 'y5axis', 'y6axis', 'y7axis', 'y8axis', 'y9axis'];
          var ax = plot.axes;
          var n, axis;
          for (n=11; n>0; n--) {
              axis = an[n-1];
              if (ax[axis].show) {
                  dataPos[axis] = ax[axis].series_p2u(gridPos[axis.charAt(0)]);
              }
          }
  
          return {offsets:go, gridPos:gridPos, dataPos:dataPos};
      }    
      
      function handleZoomMove(ev) {
          var plot = ev.data.plot;
          var c = plot.plugins.cursor;
          // don't do anything if not on grid.
          if (c.show && c.zoom && c._zoom.started && !c.zoomTarget) {
              var ctx = c.zoomCanvas._ctx;
              var positions = getEventPosition(ev);
              var gridpos = positions.gridPos;
              var datapos = positions.dataPos;
              c._zoom.gridpos = gridpos;
              c._zoom.datapos = datapos;
              c._zoom.zooming = true;
              var xpos = gridpos.x;
              var ypos = gridpos.y;
              var height = ctx.canvas.height;
              var width = ctx.canvas.width;
              if (c.showTooltip && !c.onGrid && c.showTooltipOutsideZoom) {
                  updateTooltip(gridpos, datapos, plot);
                  if (c.followMouse) {
                      moveTooltip(gridpos, plot);
                  }
              }
              if (c.constrainZoomTo == 'x') {
                  c._zoom.end = [xpos, height];
              }
              else if (c.constrainZoomTo == 'y') {
                  c._zoom.end = [width, ypos];
              }
              else {
                  c._zoom.end = [xpos, ypos];
              }
              var sel = window.getSelection;
              if (document.selection && document.selection.empty)
              {
                  document.selection.empty();
              }
              else if (sel && !sel().isCollapsed) {
                  sel().collapse();
              }
              drawZoomBox.call(c);
              ctx = null;
          }
      }
      
      function handleMouseDown(ev, gridpos, datapos, neighbor, plot) {
          var c = plot.plugins.cursor;
          $(document).one('mouseup.jqplot_cursor', {plot:plot}, handleMouseUp);
          var axes = plot.axes;
          if (document.onselectstart != undefined) {
              c._oldHandlers.onselectstart = document.onselectstart;
              document.onselectstart = function () { return false; };
          }
          if (document.ondrag != undefined) {
              c._oldHandlers.ondrag = document.ondrag;
              document.ondrag = function () { return false; };
          }
          if (document.onmousedown != undefined) {
              c._oldHandlers.onmousedown = document.onmousedown;
              document.onmousedown = function () { return false; };
          }
          if (c.zoom) {
              if (!c.zoomProxy) {
                  var ctx = c.zoomCanvas._ctx;
                  ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
                  ctx = null;
              }
              if (c.constrainZoomTo == 'x') {
                  c._zoom.start = [gridpos.x, 0];
              }
              else if (c.constrainZoomTo == 'y') {
                  c._zoom.start = [0, gridpos.y];
              }
              else {
                  c._zoom.start = [gridpos.x, gridpos.y];
              }
              c._zoom.started = true;
              for (var ax in datapos) {
                  // get zoom starting position.
                  c._zoom.axes.start[ax] = datapos[ax];
              }  
              $(document).bind('mousemove.jqplotCursor', {plot:plot}, handleZoomMove);              
          }
      }
      
      function handleMouseUp(ev) {
          var plot = ev.data.plot;
          var c = plot.plugins.cursor;
          if (c.zoom && c._zoom.zooming && !c.zoomTarget) {
              var xpos = c._zoom.gridpos.x;
              var ypos = c._zoom.gridpos.y;
              var datapos = c._zoom.datapos;
              var height = c.zoomCanvas._ctx.canvas.height;
              var width = c.zoomCanvas._ctx.canvas.width;
              var axes = plot.axes;
              
              if (c.constrainOutsideZoom && !c.onGrid) {
                  if (xpos < 0) { xpos = 0; }
                  else if (xpos > width) { xpos = width; }
                  if (ypos < 0) { ypos = 0; }
                  else if (ypos > height) { ypos = height; }
                  
                  for (var axis in datapos) {
                      if (datapos[axis]) {
                          if (axis.charAt(0) == 'x') {
                              datapos[axis] = axes[axis].series_p2u(xpos);
                          }
                          else {
                              datapos[axis] = axes[axis].series_p2u(ypos);
                          }
                      }
                  }
              }
              
              if (c.constrainZoomTo == 'x') {
                  ypos = height;
              }
              else if (c.constrainZoomTo == 'y') {
                  xpos = width;
              }
              c._zoom.end = [xpos, ypos];
              c._zoom.gridpos = {x:xpos, y:ypos};
              
              c.doZoom(c._zoom.gridpos, datapos, plot, c);
          }
          c._zoom.started = false;
          c._zoom.zooming = false;
          
          $(document).unbind('mousemove.jqplotCursor', handleZoomMove);
          
          if (document.onselectstart != undefined && c._oldHandlers.onselectstart != null){
              document.onselectstart = c._oldHandlers.onselectstart;
              c._oldHandlers.onselectstart = null;
          }
          if (document.ondrag != undefined && c._oldHandlers.ondrag != null){
              document.ondrag = c._oldHandlers.ondrag;
              c._oldHandlers.ondrag = null;
          }
          if (document.onmousedown != undefined && c._oldHandlers.onmousedown != null){
              document.onmousedown = c._oldHandlers.onmousedown;
              c._oldHandlers.onmousedown = null;
          }
  
      }
      
      function drawZoomBox() {
          var start = this._zoom.start;
          var end = this._zoom.end;
          var ctx = this.zoomCanvas._ctx;
          var l, t, h, w;
          if (end[0] > start[0]) {
              l = start[0];
              w = end[0] - start[0];
          }
          else {
              l = end[0];
              w = start[0] - end[0];
          }
          if (end[1] > start[1]) {
              t = start[1];
              h = end[1] - start[1];
          }
          else {
              t = end[1];
              h = start[1] - end[1];
          }
          ctx.fillStyle = 'rgba(0,0,0,0.2)';
          ctx.strokeStyle = '#999999';
          ctx.lineWidth = 1.0;
          ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
          ctx.fillRect(0,0,ctx.canvas.width, ctx.canvas.height);
          ctx.clearRect(l, t, w, h);
          // IE won't show transparent fill rect, so stroke a rect also.
          ctx.strokeRect(l,t,w,h);
          ctx = null;
      }
      
      $.jqplot.CursorLegendRenderer = function(options) {
          $.jqplot.TableLegendRenderer.call(this, options);
          this.formatString = '%s';
      };
      
      $.jqplot.CursorLegendRenderer.prototype = new $.jqplot.TableLegendRenderer();
      $.jqplot.CursorLegendRenderer.prototype.constructor = $.jqplot.CursorLegendRenderer;
      
      // called in context of a Legend
      $.jqplot.CursorLegendRenderer.prototype.draw = function() {
          if (this.show) {
              var series = this._series, s;
              // make a table.  one line label per row.
              this._elem = $('<table class="jqplot-legend jqplot-cursor-legend" style="position:absolute"></table>');
          
              var pad = false;
              for (var i = 0; i< series.length; i++) {
                  s = series[i];
                  if (s.show) {
                      var lt = $.jqplot.sprintf(this.formatString, s.label.toString());
                      if (lt) {
                          var color = s.color;
                          if (s._stack && !s.fill) {
                              color = '';
                          }
                          addrow.call(this, lt, color, pad, i);
                          pad = true;
                      }
                      // let plugins add more rows to legend.  Used by trend line plugin.
                      for (var j=0; j<$.jqplot.addLegendRowHooks.length; j++) {
                          var item = $.jqplot.addLegendRowHooks[j].call(this, s);
                          if (item) {
                              addrow.call(this, item.label, item.color, pad);
                              pad = true;
                          } 
                      }
                  }
              }
          }
          
          function addrow(label, color, pad, idx) {
              var rs = (pad) ? this.rowSpacing : '0';
              var tr = $('<tr class="jqplot-legend jqplot-cursor-legend"></tr>').appendTo(this._elem);
              tr.data('seriesIndex', idx);
              $('<td class="jqplot-legend jqplot-cursor-legend-swatch" style="padding-top:'+rs+';">'+
                  '<div style="border:1px solid #cccccc;padding:0.2em;">'+
                  '<div class="jqplot-cursor-legend-swatch" style="background-color:'+color+';"></div>'+
                  '</div></td>').appendTo(tr);
              var td = $('<td class="jqplot-legend jqplot-cursor-legend-label" style="vertical-align:middle;padding-top:'+rs+';"></td>');
              td.appendTo(tr);
              td.data('seriesIndex', idx);
              if (this.escapeHtml) {
                  td.text(label);
              }
              else {
                  td.html(label);
              }
              tr = null;
              td = null;
          }
          return this._elem;
      };
      
  })(jQuery);