function _overrideDoPostback(eventTarget) 
{
		var theform;
		if (window.navigator.appName.toLowerCase().indexOf("netscape") > -1) {
			theform = document.forms["frmMain"];
		}
		else {
			theform = document.frmMain;
		}
		document.getElementById("__EVENTTARGET").value = eventTarget;

		theform.submit();
}