function setDiscount() {
	var selectedItem = document.getElementById('size').selectedIndex;
			
	var cartform = document.getElementById('cartform');
	var pricediv = document.getElementById('pricediv');

	if(discountArray[selectedItem][0] != 'none') {
		if(document.getElementById('discount')) {
			var discount = document.getElementById('discount');
				discount.setAttribute("name",discountArray[selectedItem][0]);
				discount.setAttribute("type","hidden");
				discount.setAttribute("value",discountArray[selectedItem][1]);
		}
		else {
			var discount = document.createElement("input");
				discount.setAttribute("id","discount");
				discount.setAttribute("name",discountArray[selectedItem][0]);
				discount.setAttribute("type","hidden");
				discount.setAttribute("value",discountArray[selectedItem][1]);
				pricediv.appendChild(discount);
		}
	}
	else {
		if(document.getElementById('discount')) {
			var discount = document.getElementById('discount');
				discount.setAttribute("name","_"+"no-discount");
				discount.setAttribute("type","hidden");
				discount.setAttribute("value","");
		}
	}
}
var discountArray = new Array();