// Validate the Item quantities for the Item details page.
function validateItemPurchase()
{
	var oQty = document.getElementById('Quantity');
	if (!validatePresenceNonNegNumber(oQty, "Please enter a number for the quantity."))
	{
		return false;
	}

	return true;
}


// Validate the Item quantities for the Cart.
function validateCartPurchase()
{
	var oQtys = document.getElementsByTagName('input');
	for (var i = 0; i < oQtys.length; i++)
	{
		if (oQtys[i].type == 'text')
		{
			if (!validatePresenceNonNegNumber(oQtys[i], "Please enter a number for the quantity."))
			{
				return false;
			}
		}
	}

	return true;
}


// Handle the miultiple sumbit buttons you get when adding an item from a list.
function doAddItemFromListSubmit(nItemID) 
{
	document.getElementById('frmItemPurchase').action = "Cart.asp";
	document.getElementById('frmItemPurchase').ItemID.value = nItemID;
	document.getElementById('frmItemPurchase').submit();
}