function validateEmail() {
	var rg_email = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/; //name@domain.com
	var email = document.getElementById("email");
	
	//Checking for empty field
	if (email.value.length <= 0) {
		alert('Email cannot be empty.');
		email.focus();
		return false;
	}
	
	//Checking if the email is valid
	if (!rg_email.test(email.value)) {
		alert("Please provide a valid Email Address (name@domain.com)");
		email.focus();
		return false;
	}
	return true;
}