function onChoiceSelect() {
	var value = document.getElementById('choice_select').value;
	if (value == 2)
		toggleShipSection(0);
	else
		toggleShipSection(1);
}

function toggleShipSection(hide) {
	if (hide == 1) {
		document.getElementById('ship_section').style.display = "none";
		document.getElementById('ship_required').style.display = "none";
		// disable all shipping fields
		for (var i=0; i < document.orderform.elements.length; i++)
			if (document.orderform.elements[i].name.substring(0,5) == 'ship_')
				document.orderform.elements[i].disabled = 1;
	}
	else {
		document.getElementById('ship_section').style.display = "";
		document.getElementById('ship_required').style.display = "";
		// enable all shipping fields
		for (var i=0; i < document.orderform.elements.length; i++)
			if (document.orderform.elements[i].name.substring(0,5) == 'ship_')
				document.orderform.elements[i].disabled = 0;
	}
}