function chk_mailing(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[0].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 -->