I've implemented a javascript SALT into my asp.net web application.

HTML Code:
<head>
<OBJECT id="Speechtags" classid="clsid:DCF68E5B-84A1-4047-98A4-0A72276D19CC" VIEWASTEXT>
		</OBJECT>
</head>

	<!----> <?import namespace="salt" implementation="#Speechtags"/>
    <salt:prompt id="Prompt1"></salt:prompt>
	
    <script language="javascript">
    
      function StartPlayback1() 
      {
        Prompt1.Start("Message will be played");	
      }
    
			</SCRIPT>
how can i call the javascript function from my VB code to play the message when a condition is met using the If-Else condition?