function editpage_cancel()
{
	changePage("purchasePage");
}

function editpage_next()
{
	var sq = ge("selectQty");
	var qty = parseInt(sq.options[sq.selectedIndex].text);
	cart.items[cart.lastIndex] = new Item(currentPhoto, currentPaper, qty);

	createPurchasePage();
	changePage("purchasePage");
}

function editpage_setResults()
{
	var pType = ge("selectPaperType").selectedIndex;
	var s2 = ge("selectPaperSize");
	var sVal = s2.options[s2.selectedIndex].text;
	var regExp = /\d+\.?\d*/g;
	var dims = sVal.match(regExp);
	var orien = currentPhoto.orientation;

	currentPaper = stock.getPaper(pType, parseFloat(dims[0]), parseFloat(dims[1]), orien);
	var pp = ge("pPrice");
	pp.value = "$" + ShoppingCart.fix(stock.getPrice(currentPaper), "soft") + " ea.";
}

function editpage_update()
{
	var sType = ge("selectPaperType");
	var sSize = ge("selectPaperSize");
	var qt = ge("selectQty");

	sType.selectedIndex = currentPaper.type;
	for(var i = 0; i < sSize.options.length; i++)
	{
		if(sSize.options[i].text == currentPaper.getImageSize())
		{
			sSize.selectedIndex = i;
			break;
		}
	}
	qt.selectedIndex = cart.items[cart.lastIndex].qty - 1;

	ge("selectPaperType").onchange = editpage_setResults;
	ge("selectPaperSize").onchange = editpage_setResults;

	editpage_setResults();
}


var editPage = new Page("Edit");
editPage.cancel = editpage_cancel;
editPage.next = editpage_next;
editPage.update = editpage_update;