// JavaScript Document
      var whitespace = " \t\n\r";

      function isEmpty(s)
      { return ((s == null) || (s.length == 0)) }

      function isWhitespace (s)
      {
           var i;

           if (isEmpty(s)) return true;

           for (i = 0; i < s.length; i++)
           {
                var c = s.charAt(i);
                if (whitespace.indexOf(c) == -1) return false;
           }
           return true;
      }

      function ForceEntry(val, str) {
           var strInput = new String(val.value);

           if (isWhitespace(strInput)) {
                alert(str);
                return false;
           } else
                return true;
      }

	  function checkemail(src) {
	     var emailReg = "^[\\w-_\.]*[\\w-_\.]\@[\\w]\.+[\\w]+[\\w]$";
    	 var regex = new RegExp(emailReg);
	     return regex.test(src);
	  }

      function ValidateData() {
           var CanSubmit = false;

           // Check to make sure that the full name field is not empty.
			CanSubmit = checkemail(document.forms[0].Email.value);
			if (!CanSubmit) {
				alert("You must supply a valid email address");
			}
           return CanSubmit;
      }