// JavaScript Document

function validateEmail(){
	
	var emailRegEx = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	str = document.getElementById('txtEmail').value;
	
	if(str.match(emailRegEx)){
		return true;
		}
	else{
		alert('Please enter a valid email address!');
		return false;
	}
}