<!--//

function validateForm() {
	var err = 0;
	var errors = 'Sorry the following errors exist on the form\n';
	var email_regexp = /^.+\@.+\..+$/;

	if (!document.form.name.value) {
		err++;
		errors += ' - please enter your name\n';
	}

	if (!document.form.telephone.value) {
		err++;
		errors += ' - please enter your telephone number\n';
	}

	if (!document.form.email.value) {
		err++;
		errors += ' - please enter your email address\n';
	} else if (email_regexp.test(document.form.email.value) == false) {
		err++;
		errors += ' - your email address invalid\n';
	}

	if (!document.form.comments.value) {
		err++;
		errors += ' - please enter your comments\n';
	}

	if (err > 0) {
		alert(errors);
	}

	return (err == 0);
}

//-->