function jsECheck(str) {
	var aResult = true;
	var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (str != "") {
		if (filter.test(str)) {
			aResult = true;
		}
		else {
			aResult = false;
		}
	}
	else {
		aResult = false;
	}
	return (aResult)
}	

function jsCustomPopupWindow(url, wd, ht, lt, tp) {
	var crip = null;
	if((crip == null) || (crip.closed)) 
	{
		crip = window.open(url, "popupwindow", 'toolbar=no,directories=no,status=no,location=no,menubar=no,scrollbars=yes,width='+wd+',height='+ht+',left='+lt+',top='+tp+',resizable=no');
		crip.focus();
	}
	else
	{
		crip.location = url;
		crip.focus();
	}
}