// Executed when AJAX request starts
function AJAXRequestStart(sender, eventArgs) {
    // Check if request is for Grid export
    if ((Left(eventArgs.EventArgument, 11).toLowerCase() == "firecommand" && eventArgs.EventArgument.indexOf("ExportTo") != -1) || eventArgs.get_eventTarget().indexOf("buttonUploadFiles") != -1) // This is for Grid export
    {
        // Disable AJAX request
        eventArgs.EnableAjax = false;
    }
    
    // Return true
    return true;
}

// Executed when AJAX request ends
function AJAXResponseEnd(sender, eventArgs)
{
    // Return true
    return true;
}