function IsValidEmail(emailTextBox) {
	var email = emailTextBox.value;
	var emailFilter=/^.+@.+\..{2,3}$/;
	
	if(!(emailFilter.test(email)))
	{
		return false;
	}	
	return true;
}

function LimitTextBoxValue(obj, cantMax, message) {
	if ( obj.value.length > cantMax ) {
		if ( message != null ) {
			alert(message);
		}
		obj.value = obj.value.substring(0, cantMax);
		obj.focus();
		return false;
	}
		
	return true;
}