function get_size() {
    var sz;
    var tradsizemenu = document.getElementById('trad_size_menu');
    var tradcustsize1 = document.getElementById('trad_cust_size_1');
    var tradcustsize2 = document.getElementById('trad_cust_size_2');
    var tradquantmenu = document.getElementById('trad_qty_menu');

    if (tradsizemenu.value == "Other...") {
        sz = tradcustsize1.value + 'x' + tradcustsize2.value;
    }
    else {
        sz = tradsizemenu.value;
    }
    return sz;
}

function get_quantity() {
    var qty = parseInt(document.getElementById('trad_qty_menu').value);
    return qty;
}

function trad_size_menu_OnChange() {
    var tradsizemenu = document.getElementById('trad_size_menu');
    var tradcustsize1 = document.getElementById('trad_cust_size_1');
    var tradcustsize2 = document.getElementById('trad_cust_size_2');
    if (tradsizemenu.value == "Other...") {
        tradcustsize1.disabled = '';
        tradcustsize2.disabled = '';
        tradcustsize1.focus();
        tradcustsize1.select();
    }
    else {
        tradcustsize1.disabled = 'disabled';
        tradcustsize2.disabled = 'disabled';

        var s = tradsizemenu.value.split('x');
        tradcustsize1.value = s[0];
        tradcustsize2.value = s[1];
    }
    update_prices();
}

function trad_cust_size_OnChange() {
    update_prices();
}

function size_select(sizename) {
    var size_list = document.getElementById('trad_size_menu');
    for (var i = 0; i < size_list.options.length; i++) {
        if (size_list.options[i].value == sizename) {
            size_list.selectedIndex = i;
            update_prices();
            break;
        }
    }
    var id;
    switch (sizename) {
        case '3.5x5.5': id = 's35x55'; break;
        case '4x6': id = 's4x6'; break;
        case '4.25x6.25': id = 's425x625'; break;
        case '5x7': id = 's5x7'; break;
        case '6x8': id = 's6x8'; break;
        default: id = '';
    }
    var sl = document.getElementById('sizes-list');
    for (var i = 0; i < sl.childNodes.length; i++) {
        var li = sl.childNodes[i];
        if (li.nodeName == 'LI') {
            var thissize = li.childNodes[0].innerHTML;
            if (thissize == sizename)
                li.className = 'chosen';
            else
                li.className = '';
        }
    }
}

var tbhr = 'javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions("trad_submit", "", true, "", "", false, true))';

function quantity_change() {
    var qtylist = document.getElementById('trad_qty_menu');
    var tradbtn = document.getElementById('trad_submit');
    var tradbtntr = document.getElementById('trad_submit_tr');
    if (qtylist.value < 5000) {
        tradbtntr.style.opacity = '0.25';
        if (typeof tradbtn.disabled != 'undefined')
            tradbtn.disabled = true;
        else
            tradbtn.href = 'javascript:return false;';
    }
    else {
        tradbtntr.style.opacity = '1.0';
        if (typeof tradbtn.disabled != 'undefined')
            tradbtn.disabled = false;
        else
            tradbtn.href = tbhr;
    }
    update_prices();
}