if (document.images) {

 homeon = new Image();
 homeon.src = "/images/menu_home_on.gif";

 homeoff = new Image();
 homeoff.src = "/images/menu_home_off.gif";

 customer_serviceon = new Image();
 customer_serviceon.src = "/images/menu_customer_service_on.gif";

 customer_serviceoff = new Image();
 customer_serviceoff.src = "/images/menu_customer_service_off.gif";

 companyon = new Image();
 companyon.src = "/images/menu_company_on.gif";

 companyoff = new Image();
 companyoff.src = "/images/menu_company_off.gif";

 learnon = new Image();
 learnon.src = "/images/menu_learn_on.gif";

 learnoff = new Image();
 learnoff.src = "/images/menu_learn_off.gif";

 newson = new Image();
 newson.src = "/images/menu_news_on.gif";

 newsoff = new Image();
 newsoff.src = "/images/menu_news_off.gif";

 express_shopon = new Image();
 express_shopon.src = "/images/leftmenu_express_shop_hover.gif";

 express_shopoff = new Image();
 express_shopoff.src = "/images/leftmenu_express_shop_off.gif";

 coffeeon = new Image();
 coffeeon.src = "/images/leftmenu_coffee_hover.gif";

 coffeeoff = new Image();
 coffeeoff.src = "/images/leftmenu_coffee_off.gif";

 teaon = new Image();
 teaon.src = "/images/leftmenu_tea_hover.gif";

 teaoff = new Image();
 teaoff.src = "/images/leftmenu_tea_off.gif";

 giftson = new Image();
 giftson.src = "/images/leftmenu_gifts_hover.gif";

 giftsoff = new Image();
 giftsoff.src = "/images/leftmenu_gifts_off.gif";

 recurring_deliveryon = new Image();
 recurring_deliveryon.src = "/images/leftmenu_recurring_delivery_hover.gif";

 recurring_deliveryoff = new Image();
 recurring_deliveryoff.src = "/images/leftmenu_recurring_delivery_off.gif";

 accessorieson = new Image();
 accessorieson.src = "/images/leftmenu_accessories_hover.gif";

 accessoriesoff = new Image();
 accessoriesoff.src = "/images/leftmenu_accessories_off.gif";

 my_accounton = new Image();
 my_accounton.src = "/images/leftmenu_my_account_hover.gif";

 my_accountoff = new Image();
 my_accountoff.src = "/images/leftmenu_my_account_off.gif";

 shopping_carton = new Image();
 shopping_carton.src = "/images/leftmenu_shopping_cart_hover.gif";

 shopping_cartoff = new Image();
 shopping_cartoff.src = "/images/leftmenu_shopping_cart_off.gif";

 check_outon = new Image();
 check_outon.src = "/images/leftmenu_checkout_hover.gif";

 check_outoff = new Image();
 check_outoff.src = "/images/leftmenu_checkout_off.gif";

 wholesaleon = new Image();
 wholesaleon.src = "/images/leftmenu_wholesale_hover.gif";

 wholesaleoff = new Image();
 wholesaleoff.src = "/images/leftmenu_wholesale_off.gif";

}


/*
This function can be used to add unlimited window.onload events.
*/
function addLoadEvent(func) {
    var oldonload = window.onload;
        if (typeof window.onload != 'function') {
            window.onload = func;
        } else {
            window.onload = function() {
            if (oldonload) {
                oldonload();
            }
            func();
        }
    }
}

/*
This function is used to disable the form to help prevent 
double submits.

Usage: 
<form onsubmit="submitAndDisableForm(this);return void;">
*/
function submitAndDisableForm(form)
{
    form.submit();
    var elements = form.elements();
    for(var i=0;i<elements.length;i++) {
        elements[i].disabled=true;
    }
}

/*
This function can be used to disable the "Enter" key for 
stricter control over forms.
Usage:
document.onkeypress = disableEnterKey;
*/
function disableEnterKey(e)
{
     var key;
     if(window.event)
          key = window.event.keyCode;     //IE
     else
          key = e.which;     //firefox

     if(key == 13)
          return false;
     else
          return true;
}