function brandChosen(elem,type) {
    var brand = $('brand').options[elem.selectedIndex].value ;
    if (brand > 0) {
        new Ajax.Request('/Pages/printers/' + brand + '/' + type, {
            onSuccess: function(response) {
                $('printerDiv').innerHTML = response.responseText;
                $('printer').disabled = 0;
            }
        });
    } else {
        $('printer').disabled = 1;
        $('cartridge').disabled = 1;
    }
}
function printerChosen(elem) {
        var printer = $('printer').options[elem.selectedIndex].value;
        if (printer > 0) {
                new Ajax.Request('/Pages/cartridges/' + printer, {
                onSuccess: function(response) {
                        $('cartridgeDiv').innerHTML = response.responseText;
                        $('cartridge').disabled = 0;
                }
        });
        } else {
                $('cartridge').disabled = 1;
        }
}
function sidebarChosen(url) {
    window.location.href = url;
}
function saleNext() {
    if (salePage < maxSalePages) {
    salePage = salePage + 1;
    new Ajax.Request('/Pages/sale/' + (salePage - 1), {
        onSuccess: function(response) {
            $('on_sale').innerHTML = response.responseText;
            $('sale_start').innerHTML = ( (salePage * 21) - 21) + 1;
            if (totalSale < (salePage * 21)) {
                $('sale_stop').innerHTML = totalSale;
            } else {
                $('sale_stop').innerHTML = (salePage * 21);
            }
        }
    });
    }
}
function salePrev() {
    if (salePage > 1) {
    salePage = salePage - 1;
    new Ajax.Request('/Pages/sale/' + (salePage - 1), {
        onSuccess: function(response) {
            $('on_sale').innerHTML = response.responseText;
            $('sale_start').innerHTML = ( (salePage * 21) - 21) + 1;
            if (totalSale < (salePage * 21)) {
                $('sale_stop').innerHTML = totalSale;
            } else {
                $('sale_stop').innerHTML = (salePage * 21);
            }
        }
    });
    }
}
var salePage = 1;