// JavaScript Document
function OrderQuantity(doQuantity, doAction) {
	var CurrentQuantity = document.orderform.quantity.value * 1.0;
	
	if (doAction == 1) {
		CurrentQuantity -= doQuantity;
		
		if (CurrentQuantity < doQuantity) {
			CurrentQuantity = doQuantity;
		}
	}
	
	if (doAction == 2) {
		CurrentQuantity += doQuantity;
	}
	
	document.orderform.quantity.value = CurrentQuantity;
}