Sets the mouseout event handler for the legend, which is triggered when the user moves the mouse pointer outside a legend item. After the event is triggered, the event related data is passed as a parameter to the assigned event handler. Parameters passed to the function are shown in the Event Object section below.
var  chart =  new  CanvasJS.Chart("container",
{
 .
 .
 legend: {
  
   itemmouseout: function(e){
          alert( "Mouse moved outside the legend item");
        }
 },
 .
 . 
});
chart.render();
e:{ 
	x, 
	y,
        chart,
	dataPoint, 
	dataSeries, 
	dataPointIndex, 
	dataSeriesIndex
}
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