function validateEmail(src) {  
			emailReg = "^[\\w-_\.]*[\\w-_\.]\@[\\w]\.+[\\w]+[a-zA-Z]$"  
			var regex = new RegExp(emailReg);  
			if(regex.test(src) == false){  
				alert('Please enter a valid email address and try again!');  
				document.frmEmailList.txtEmail.value = ""  
				document.frmEmailList.txtEmail.focus();  
				return false;  
			}  
			return regex.test(src);  
		}