Вот участок кода на которую жалуется консоль ошибок mozzila firefox! ReferenceError: jQuery is not defined !

b.animate);if(a==="max"&&this.orientation==="horizontal")this.range[e?"animate":"css"]({width:100-f+"%"},{queue:false,duration:b.animate});if(a==="min"&&this.orientation==="vertical")this.range.stop(1,1)[e?"animate":"css"]({height:f+"%"},b.animate);if(a==="max"&&this.orientation==="vertical")this.range[e?"animate":"css"]({height:100-f+"%"},{queue:false,duration:b.animate})}}});d.extend(d.ui.slider,{version:"1.8.2"})})(jQuery);

<script type="text/javascript">
<!--
var number_format_dec = ',';
var number_format_th = '.';
var number_format_point = '2';
var store_language = 'NL';
var xcart_web_dir = "/1757";
var images_dir = "/1757/skin1/images";
var lbl_no_items_have_been_selected = 'Er zijn geen items geselecteerd';
var current_area = 'C';
-->
</script><script src="/1757/skin1/common.js" language="JavaScript" type="text/javascript"></script>
 
<script type="text/javascript" language="JavaScript 1.2" src="/1757/skin1/slider/jquery.ui.core.min.js"></script>
<script type="text/javascript" language="JavaScript 1.2" src="/1757/skin1/slider/jquery.ui.widget.min.js"></script>
<script type="text/javascript" language="JavaScript 1.2" src="/1757/skin1/slider/jquery.ui.mouse.min.js"></script>
<script type="text/javascript" language="JavaScript 1.2" src="/1757/skin1/slider/jquery.ui.slider.min.js"></script>
 
<link href="/1757/skin1/slider/jquery-ui-1.8.2.custom.css" rel="stylesheet" type="text/css" /><meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
<link href="/1757/skin1/customer/css/globalreset.css" rel="stylesheet" type="text/css" />
<link href="/1757/skin1/customer/css/all.css" rel="stylesheet" type="text/css" />
<!--[if lt IE 7]><link href="/1757/skin1/customer/css/ie.css" rel="stylesheet" type="text/css" /><![endif]-->
 
<link href="/1757/skin1/customer/css/skin1_customer.css" rel="stylesheet" type="text/css" />
 
<script type="text/javascript" language="JavaScript 1.2">
<!--
var min_avail = 1;
var avail = 2;
var product_avail = avail;
var txt_out_of_stock = "Niet voorradig";
 
 
function FormValidation() {
 
    if(!check_exceptions()) {
        alert(exception_msg);
        return false;
    } else if (min_avail > avail) {
        alert(txt_out_of_stock);
        return false;
    }
 
    
 
    return true;
}
 
-->
</script>
<script type="text/javascript" language="JavaScript 1.2">
            <!--
            var alert_msg = 'Y';
            -->
        </script>
        <script type="text/javascript" language="JavaScript 1.2">
<!--
 
/*
variants array:
    0 - array:
        0 - taxed price
        1 - quantity
        2 - variantid if variant have thumbnail
        3 - weight
        4 - original price (without taxes)
        5 - productcode
        6 - is_unlimited
        7 - soon_deliver
    1 - array: variant options as classid => optionid
    2 - array: taxes as taxid => tax amount
    3 - wholesale prices array:
        0 - quantity
        1 - next quantity
        2 - taxed price
        3 - taxes array: as taxid => tax amount
        4 - original price (without taxes)
*/
var variants = [];
variants[113408] = [[8.25, 100000, new Image(), '0.00', 8.25, "8.000233.01", "N"],{},{},[]];
variants[113408][1][431288] = 1457622;
variants[113408][0][2].src = "/1757/image.php?id=113408&type=W"; 
variants[113408][0][7] = 'Y';
variants[113409] = [[8.25, 100000, new Image(), '0.00', 8.25, "8.000233.03", "Y"],{},{},[]];
variants[113409][1][431288] = 1457623;
variants[113409][0][2].src = "/1757/image.php?id=113409&type=W"; 
variants[113409][0][7] = 'Y';
 
/*
modifiers array: as clasid => array: as optionid => array:
    0 - price_modifier
    1 - modifier_type
    2 - taxes array: as taxid => tax amount
*/
var modifiers = [];
// names array: as classid => class name
var names = [];
names[431288] = {class_name: "Kleur", options: []};
names[431288]['options'][1457622] = "wit-01";
names[431288]['options'][1457623] = "ivoorkleur-03";
 
/*
taxes array: as taxid => array()
    0 - calculated tax value for default product price
    1 - tax name
    2 - tax type ($ or %)
    3 - tax value
*/
var taxes = [];
 
// exceptions array: as exctionid => array: as clasid => optionid
var exceptions = [];
 
/*
_product_wholesale array: as id => array:
    0 - quantity
    1 - next quantity
    2 - taxed price
    3 - taxes array: as taxid => tax amount
    4 - original price (without taxes)
*/
var product_wholesale = [];
var _product_wholesale = [];
 
var product_image = new Image();
product_image.src = "/1757/image.php?id=&type=T";
var exception_msg = "Waarschuwing! Deze combinatie van varianten van de product-opties kan niet worden geselecteerd";
var exception_msg_html = "Waarschuwing! Deze combinatie van varianten van de product-opties kan niet worden geselecteerd";
var txt_out_of_stock = "Niet voorradig";
var pconf_price = 0
var default_price = 0;
var currency_symbol = "€";
var alter_currency_symbol = "";
var alter_currency_rate = 0;
var lbl_no_items_available = "Geen items beschikbaar";
var txt_items_available = "item(s) beschikbaar";
var list_price = 0;
var price = 0;
var orig_price = 0;
var mq = 100;
var dynamic_save_money_enabled = false;
var is_unlimit = false;
 
var lbl_item = "Item";
var lbl_items = "Items";
var lbl_quantity = "Aantal";
var lbl_price = "Prijs";
var txt_note = "Opmerking";
var lbl_including_tax = "";
basket_deliver_full = "/1757/skin1/customer/images/basket_deliver_full.png";
basket_deliver_empty = "/1757/skin1/customer/images/basket_deliver_empty.png";
basket_non_deliver_full = "/1757/skin1/customer/images/basket_non_deliver_full.png";
basket_image_empty = "/1757/skin1/customer/images/basket.png";
 
 
-->
</script>
 
<script src="/1757/skin1/modules/Product_Options/func.js" language="JavaScript" type="text/javascript"></script>

<script src="http://code.jquery.com/jquery-latest.js"></script>