plz can any buddy tell me the answr for ???
tanks in advance

<script language="JavaScript">
var javaScriptVar = <%=AspVar%>
</script>

And here's a little more info about mixing server-side ASP (which gets processed first) with client-side JavaScript.

As already mentioned by Wigz it's easy to use the value of a VBScript variable in JavaScript:
document.writeln('<%= MyVBScriptVariable %>');

Or here is an example which puts the value of a VBScript variable into a JavaScript alert box:
Response.Write "<script language='JavaScript'>alert('The value is " & MyVBScriptVariable & "');</script>"

But to send the value of a JavaScript variable to VBScript, well that's another story. You could have the JavaScript fill in a hidden form field and then post the form. That way VBScript can pick up the value of the hidden form field with Request.Form("MyFieldName")