Override Redirect Help link SharePoint 2010

Override help link on SharePoint 2010.

Excellent article.
http://blakeblackshear.wordpress.com/2009/04/25/adding-a-custom-help-url-to-sharepoint-the-right-way/ 

JS snippet:

var intervalId = setInterval('OverrideHelpButton()', 250);
function OverrideHelpButton()
{
TopHelpButtonClick = function (strParam)
{
var wndHelp=window.open('/HelpFiles/index.html', 'STSHELP',
'height=500,location=no,menubar=no,resizable=yes,scrollbars=yes,status=no,toolbar=no,width=475'
 );
wndHelp.focus();
}
}
setTimeout('window.clearInterval(intervalId);', 10000);