internalkey	= "H2HRE2@ePzU";

	function chk_feedback(x) {
		
		message 	= "Form incomplete, please \n\n";
		submitOK	= "True";

		if (!isValidEmail (x.Email.value)) 
		{ message += "- Enter a correct email address\n";				submitOK="False"; }

		if (x.MailerRequired.checked && !chksel (x.Category)) 
		{ message += "- Tell us who you are\n";						submitOK="False"; }

		x.InternalKey.value	= internalkey;

		if (submitOK=="False")
			{ alert(message); return false; }

		return true;

	} <!-- end of function -->




	function isValidEmail(address) {

		if (address.indexOf('@') < 2) return false;

		var period = address.indexOf('.');

		if (period == -1) return false;

		var name = address.substring(0, address.indexOf('@'));
		var domain = address.substring(address.indexOf('@') + 1);

		if (name.indexOf('(') != -1 || name.indexOf(')') != -1 || name.indexOf('<') != -1 || name.indexOf('>') != -1
		|| name.indexOf(',') != -1 || name.indexOf(';') != -1 || name.indexOf(':') != -1 || name.indexOf('\\') != -1 
		|| name.indexOf('"') != -1 || name.indexOf('[') != -1 || name.indexOf(']') != -1 || name.indexOf(' ') != -1)
			 return false;

		if (domain.indexOf('(') != -1 || domain.indexOf(')') != -1 || domain.indexOf('<') != -1
		|| domain.indexOf('>') != -1
		|| domain.indexOf(',') != -1 || domain.indexOf(';') != -1 || domain.indexOf(':') != -1 
		|| domain.indexOf('\\') != -1 || domain.indexOf('"') != -1 || domain.indexOf('[') != -1 
		|| domain.indexOf(']') != -1 || domain.indexOf(' ') != -1) 
			return false;

	return true;

	} <!-- end of function -->



	function chksel (x) {

		var boxLength 			= x.length;
		var v					= "";
		var ov				= "";

		for (i = 0; i < boxLength; i++) {

			if (x.options[i].selected && x.options[i].value != "")
				return true; 
		}

		return false;

	} <!-- end of function -->