//////////////////////////////////////////////////////////////////
// get major Silverlight version
// Return values:
// 0 -> Silverlight not installed (at least not properly).
// 1 -> Silverlight 1 installed
// 2-> Silverlight 2 installed
// 2-> Silverlight 3 installed

//////////////////////////////////////////////////////////////////
getSilverlightVersion = function() {

var SLVersion;
try {  
       try {
            var control = new ActiveXObject('AgControl.AgControl');
            if (control.IsVersionSupported("3.0"))                
               SLVersion = 3;
            else
            if (control.IsVersionSupported("2.0"))               
               SLVersion = 2;
            else
               SLVersion = 1;           
            control = null;
      }
      catch (e) {      
                     var plugin = navigator.plugins["Silverlight Plug-In"];
                     if (plugin)
                     {         
                       if (plugin.description === "1.0.30226.2")             
                          SLVersion = 2;
                       else
                          SLVersion = parseInt(plugin.description[0]);
                      }
                      else
                         SLVersion = 0;
      }
}

catch (e) { 
      SLVersion = 0;

}
return SLVersion;

}