function val(eID){
	return document.getElementById(eID).value;
}
function show(eID){
	document.getElementById(eID).style.display='block';
}
function hide(eID){
	document.getElementById(eID).style.display='none';
}
function checkDeliveryDates(){
	myOption = -1;
	for (i=0; i <  document.form.delivery.length; i++) {
		if (document.form.delivery[i].checked) {
			myOption = i; 
		}
	}
	if (myOption == -1) {
		show('delivery_required');
		return false;
	} 
	else {
		return true;
	}
	return false;
}