Do you have to call RegisterClientScriptInclude in postback?
<p>I need to register a javascript file from code-behind. I am interested to know whether this just needs to be called at the initial page load, or do I have to call it on each postback too ?</p>

<pre><code>string clientUrl = ResolveClientUrl("~/Includes/global.js");
if (!Page.ClientScript.IsClientScriptIncludeRegistered(GetType(), "Global"))
    Page.ClientScript.RegisterClientScriptInclude(GetType(), "Global", clientUrl);
</code></pre>
