// PageRequestManager.js
Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler);
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler)
function BeginRequestHandler(sender, args)
{
ActiveMessageDiv('visible', 'ActiveMessageDiv');
}
function EndRequestHandler(sender, args)
{
ActiveMessageDiv('hidden', 'ActiveMessageDiv');
}
function ActiveMessageDiv(visibility, divId)
{
$get(divId).style.visibility = visibility;
}