  <!--
	function validEmail(formName, emailInputName)
	{
		var elem = document.forms[formName].elements[emailInputName];
		if (elem)
		{
			var s = elem.value;
			var result = s.match(/\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/); 
			if (s == '' || result == null)
			{
				alert("Please enter a valid email address.");		//This is the warning message.
				elem.focus();		//This line sets focus on the email field.
				return false;
			}
			else 
			{
				return true;
			}
		}
		else
		{//Cannot find form input of name emailInputName
			return false;	//Validation succeeds, form is submitted.
		}
	}
  //-->