function onLoad() {
	var biscuit = document.cookie;
	biscuit = biscuit.substring(biscuit.indexOf("currency"),biscuit.length);

	if (biscuit.indexOf(";") != -1)
		biscuit = biscuit.substring(0,biscuit.indexOf(";"));


	if (biscuit.indexOf("currency") == -1)
		document.cookie = "currency=GBP; path=/; expires=Thu, 01-Jan-2070 00:00:01 GMT;";
return;	if (biscuit.indexOf("GBP") != -1)
		document.currencyForm.currency.options[0].selected = true;
	else if (biscuit.indexOf("USD") != -1)
		document.currencyForm.currency.options[1].selected = true;
	else if (biscuit.indexOf("EUR") != -1)
		document.currencyForm.currency.options[2].selected = true;
	else if (biscuit.indexOf("JPY") != -1)
		document.currencyForm.currency.options[3].selected = true;
	else if (biscuit.indexOf("AUD") != -1)
		document.currencyForm.currency.options[4].selected = true;
	else if (biscuit.indexOf("CAD") != -1)
		document.currencyForm.currency.options[5].selected = true;
}

function setCurrency() {
	var currency = "GBP";
	var currencyCookie = "currency=" + escape(currency)  + "; path=/; expires=Thu, 01-Jan-2070 00:00:01 GMT;";

	document.cookie = currencyCookie;
	window.location.reload(true);
}

function change(id, oper) {
	var products = getProducts();

	if (oper == "+")
		if (products[id])
			products[id]++;
		else
			products[id] = 1;
	else if (oper == "-")
		if (products[id])
			products[id]--;
		else
			products[id] = 0;

	setCookie(products);
	document.getElementById("qty_"+id).value = products[id];
}

function getProducts() {
	var biscuit = document.cookie;
	var index = biscuit.indexOf("products=");
	var cartItems = new Array();

	if (index == -1)  //if there are no products return empty array
		return cartItems;

	biscuit = unescape(biscuit.substring(index+9,biscuit.length));

	//grab the end of the product string
	if (biscuit.indexOf(";") != -1)
		biscuit = biscuit.substring(0,biscuit.indexOf(";"));

    var cartPairs = biscuit.split(" ");

	for ( var count=0; count < cartPairs.length; count++ )	{
		var itemCodeAndCount = cartPairs[count].split(":");
		cartItems[ itemCodeAndCount[0] ] = itemCodeAndCount[1];
	}

	return cartItems;
}

function setCookie (itemsArray) {
	var cartPairs = new Array();
	var i=0;

	//join array into an array of code:quantity
	for ( var count=0; count < itemsArray.length; count++ )
		if (itemsArray[count])
			cartPairs[i++] = ( count + ":" + itemsArray[count] );


	var cartCookieValue = cartPairs.join(" ");
	document.cookie = "products=" + escape(cartCookieValue) + "; path=/;";
}

function setupOptions(view, number, orderBy, order) {
	if (view != '')
		setOption(document.optionsForm.view, view);
	else
		document.optionsForm.view.options[0].selected = true;
	if (number != '')
		setOption(document.optionsForm.number, number);
	else
		document.optionsForm.number.options[4].selected = true;
	if (orderBy != '')
		setOption(document.optionsForm.orderBy, orderBy);
	else
		document.optionsForm.orderBy.options[1].selected = true;
	if (order != '')
		setOption(document.optionsForm.order, order);
	else
		document.optionsForm.order.options[0].selected = true;
}

function setPage(num) {
	//document.products["pageBox"].options[num].selected = true;
	document.getElementsByName("pageBox")[0].options[num].selected = true;
	//document.getElementsByName("pageBox")[1].options[num].selected = true;

}

function setOption(op, value) {
	for (i = 0; i < op.length ; i++) {
		if (op.options[i].value == value) {
			op.options[i].selected = true;
		}
	}
}

function delCookie (name) {
    document.cookie = name + "=" + "; expires=Thu, 01-Jan-1970 00:00:01 GMT" +  "; path=/";
}

function clearOrder() {
    delCookie("products");
    //document.location.href = "index.php";
}

function addbookmark() {
	if (document.all) {
		window.external.AddFavorite("http://www.emu-oil-well.com/","");
	}
}

function submitForm() {
	var country = document.order.country;
	if (document.order.first_name.value == ""	|| document.order.address1.value == "" ||
		document.order.city.value == ""		|| document.order.state.value == "" ||
		document.order.zip.value == ""		|| document.order.last_name.value == "" ||
		document.order.tel.value == ""		|| country[country.selectedIndex].value =="NA" ||
		document.order.email.value.indexOf("@") == -1)
	{
		document.forms['order'].action = "checkout.php";
	}
}

function openWin(file) {
	var newWindow = '';
	file = file.toLowerCase();
	file = file.trim();

	if (file.substr(file.length -1, 1) == " ") {
		file = file.substr(0,file.length -1);
	}

	file = "info/"+file+".html";
	newWindow = window.open(file,'mapWin',"resizable=yes,scrollbars=yes,width=600,height=400");
	newWindow.focus();
}

function updateCountry() {
	var country = document.order.country;
	var postage = 0.00;
	var subTotal = document.order.elements["subTotal"].value;
	    subTotal = subTotal.substring(1);
	var currency = document.order.currencySymbol.value;

	if (country[country.selectedIndex].id == "0")
		postage = document.order.elements["UKPostalCost"].value;
	else if (country[country.selectedIndex].id == "1")
		postage = document.order.elements["europePostalCost"].value;
	else if (country[country.selectedIndex].id == "2")
		postage = document.order.elements["internationalPostalCost"].value;
	else
		return;

	postage = postage * document.order.currencyRate.value * 1.175;
	postage = postage.toFixed(2);

	document.order.elements["postage"].value = currency + postage;
	document.order.elements["handling_cart"].value = postage;

	subTotal = parseFloat(subTotal) + parseFloat(postage);
	document.order.elements["total"].value = currency + subTotal.toFixed(2);
}

String.prototype.trim = function() {
	a = this.replace(/^\s+/, '');
	return a.replace(/\s+$/, '');
};

function updateBasket() {
	var products = getProducts();

	for (var i = 0; document.products[i].name != "add"; i++) {
		var id = parseInt(document.products[i].name) + 0;
		var qty = parseInt(document.products[i].value) + 0;

		if (products[id])
			products[id] = parseInt(products[id]) + qty;
		else
			products[id] = qty;

		if (products[id] < 0)
			products[id] = 0;
	}

	setCookie(products);
}

function submitVoucher() {
    var voucher = document.getElementById("voucherInput").value;
    if (voucher == "") {
        alert("Invalid voucher");
        return;
    }
    document.cookie = voucher + "=true; path=/; expires=Thu, 01-Jan-2070 00:00:01 GMT;";
    window.location.reload(true);
}