title: Change color of a hotspot region on mousehover
body: <p>I am generating HotSpot on Image Map control dynamically. Here is the code </p>
  
  <pre><code>// Programmatically create a RectangleHotSpot.
  RectangleHotSpot Rectangle1 = new RectangleHotSpot();
  Rectangle1.Top = 50;
  Rectangle1.Left = 10;
  Rectangle1.Bottom = 200;
  Rectangle1.Right = 200;
  Rectangle1.NavigateUrl = "http://stackoverflow.com";
  
  ImageMap1.HotSpots.Add(Rectangle1);  
  </code></pre>
  
  <p>This is done on PageLoad, now i want to Set color of the hotspot on mousehover i.e once user takes his mouse over the hotspot region the colour shold change and should be somewhat transperant. how can this be done?</p>