Hi, i m using the following code but it is not working...

if(!Page.IsPostBack)
{
if(!Page.IsClientScriptBlockRegistered("scriptcode"))
{
Page.RegisterClientScriptBlock("scriptcode","<script language=javascript src=\"scriptcode.js\"></script>");
}
}

actually that drop down is pasted on a user control and the user control is pasted on a page. i have written this code on the both page user control and the actual page, but it is not working....
what should i do???