How to scroll an ASP.NET control into view after page load using codebehind

Introduction
In some cases when an ASP.NET page loads the control you need to focus on is not visible because it is further down the page. I have had numerous occasions where a request varible indicates which item on a long list the user is interested in viewing, this script can help by scrolling the particular item into view.

Code
The following function I have added to a Utils.dll library for gerneral use so is static and needs the current page as a variable.

public class Utils
{
public static void FocusControlOnPageLoad(string ClientID, System.Web.UI.Page page)

{

page.RegisterClientScriptBlock("CtrlFocus",

@"<script>

function ScrollView()

{
var el = document.getElementById('"+ClientID+@"')if (el != null){el.scrollIntoView();
el.focus();}
}

window.onload += ScrollView;

</script>");

}
}

You can use this as follows:

private void Page_Load(object sender, System.EventArgs e)
{
Utils.FocusControlOnPageLoad(this.yourcontrol.ClientID, this.Page);
}