function ValidateEmail(email) {
	var emailFilter=/^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
	if (!(emailFilter.test(email))) { 
		var emailError = true;
	}

	if (emailError){
		document.getElementById('emailError').style.display="block";
		return false;
	}

}