ThumbMouseOver プロパティ

// The client event ThumbMouseOver takes two parameters sender and e
// sender  is the object which is raising the event
// e is the SliderThumbMouseEventArgs
 function WebSlider1_ThumbMouseOver(sender, e) {

     var slider = $find("WebSlider1"); 
      
     //Checks which thumb is involved in event
     //True means secondary thumb and false means main thumb
     var thumb = e.isSecondary();

     if (thumb == true) {
         //Gets value at the secondary thumb
         var secondaryValue = slider.get_secondaryValue();

         window.status = "Secondary Value is " + secondaryValue;
     }
     else {
         //Gets value at the main thumb
         var mainValue = slider.get_value();

         window.status = "Main Value is " + mainValue;
     }       
 }