function gosurvey() {
	var x = prompt('Current customers enter your customer number \(just above your address\) from your most recent service receipt.','');
	if (!x) {
		top.location.href='contact.htm';
	} else {
		var y = prompt('Now please enter the invoice number from your most recent service receipt:','');
		top.location.href='custsurvey.cfm?customer_id=' + x + '&invoice_id=' + y;
	}
}