function addToCart(supply){
		var shape = document.getElementById("selShape").value;
		var color = document.getElementById("selColor").value;
		supply = supply + shape + color;
		window.location.href='cart.php?action=add&itemId='+supply;
	}
function addToCart2(cartridgeId){
	var qty = (document.getElementById("txtQty").value);
	window.location.href='cart.php?action=add2&itemId='+cartridgeId+'&qty='+qty;
}