html里怎样用JavaScript调用silverlight里的方法?该怎么处理

html里怎样用JavaScript调用silverlight里的方法?
如题，求详细代码？急！

------解决方案--------------------
HTML code
 
  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
  <html xmlns="http://www.w3.org/1999/xhtml" > 
  <!-- saved from url=(0014)about:internet --> 
  <head> 
    <title>Silverlight Project Test Page  </title> 

    <style type="text/css"> 
   html, body { 
   } 
   body { 
 	  padding: 0; 
 	  margin: 0; 
   } 
   #silverlightControlHost {	   
   } 
       .highlightedParagraph 
     { 
     	color: White; 
     	background-color: Lime;       
     } 
    </style> 
      
    
    <script type="text/javascript"> 
     function onSilverlightError(sender, args) { 
       if (args.errorType == "InitializeError")  { 
         var errorDiv = document.getElementById("errorLocation"); 
         if (errorDiv != null) 
           errorDiv.innerHTML = args.errorType + "- " + args.errorMessage; 
       } 
     } 
    </script> 
    
    <script type="text/javascript"> 
   /////调用Silverlight中函数 
   function changeText() 
    { 
      var control = document.getElementById("silverlightControl"); 
      control.content.Page.ChangeText("This TextBlock has been updated through JavaScript."); 
    } 
    /////调用Silverlight中函数 
    function getRandom1To6() 
    { 
      var control = document.getElementById("silverlightControl"); 
      var random = control.content.services.createObject("RandomNumbers"); 
      alert("Your number is: " + random.GetRandomNumberInRange(1, 6)); 
    } 
    </script> 
  </head> 

  <body> 
    <!-- Runtime errors from Silverlight will be displayed here. 
 	This will contain debugging information and should be removed or hidden when debugging is completed --> 
 	 <div id='errorLocation' style="font-size: small;color: Gray;"> </div> 

    <div id="silverlightControlHost"> 
 		 <object data="data:application/x-silverlight," type="application/x-silverlight-2" width="400" height="300" id="silverlightControl"> 
 			 <param name="source" value="ScriptableSilverlight.xap"/> 
 			 <param name="onerror" value="onSilverlightError" /> 
 			 <param name="background" value="white" /> 

 			 <a href="http://go.microsoft.com/fwlink/?LinkID=108182" style="text-decoration: none;"> 
    			 <img src="http://go.microsoft.com/fwlink/?LinkId=108181" alt="Get Microsoft Silverlight" style="border-style: none"/> 
 			 </a> 
 		 </object> 
 		 <iframe style='visibility:hidden;height:0;width:0;border:0px'> </iframe> 
    </div> 
   /////调用Silverlight中函数 
    <p onclick="changeText()">Click here to change the Silverlight TextBlock. </p>   
    <p onclick="getRandom1To6()">Click here to get a random number from 1 to 6. </p>
html里怎样用JavaScript调用silverlight里的方法?该怎么处理

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