var NN_js_ok = 0;
var swap_ok = 0;

if (document.images)
{
  swap_ok = 1;
}

var img_array = new Array();

function add_image (imgname, imgON, imgOFF)
  {
    if (swap_ok)
    {
      img_array [imgname] = new create (imgname, imgON, imgOFF);
    }
  }

function create (imgname, imgON, imgOFF)
  {
     if (swap_ok)
     {
       this.name    = imgname;
       this.on      = new Image();
       this.off     = new Image();
       this.on.src  = imgON;
       this.off.src = imgOFF;
     }
  }

function turn_ON (imgname)
  {
    if (swap_ok)
    {
      document[imgname].src = img_array[imgname].on.src;
    }
  }

function turn_OFF (imgname)
  {
    if (swap_ok)
    {
      document[imgname].src = img_array[imgname].off.src;
    }
  }

if (swap_ok)
  {
    add_image("Home", "/images/page_layout/home_over.gif", "/images/page_layout/home.gif");
    add_image("Choose", "/images/page_layout/choose_over.gif", "/images/page_layout/choose.gif");    
    add_image("About", "/images/page_layout/about_over.gif", "/images/page_layout/about.gif");
    add_image("Products", "/images/page_layout/products_over.gif", "/images/page_layout/products.gif");
    add_image("Supplies", "/images/page_layout/supplies_over.gif", "/images/page_layout/supplies.gif");
    add_image("Support", "/images/page_layout/support_over.gif", "/images/page_layout/support.gif");
    add_image("My Account", "/images/page_layout/my_account_over.gif", "/images/page_layout/my_account.gif");
    add_image("Search", "/images/page_layout/search_over.gif", "/images/page_layout/search.gif");
    
    add_image("MachineIDSubmitButton", "/images/button_ok_on.gif", "/images/button_ok.gif");
    add_image("MachineIDCancelButton", "/images/button_cancel_on.gif", "/images/button_cancel.gif");
    add_image("MachineIDDeleteButton", "/images/button_delete2_on.gif", "/images/button_delete2.gif");

    add_image("MachineMeterSubmitButton", "/images/button_ok_on.gif", "/images/button_ok.gif");
    add_image("MachineMeterCancelButton", "/images/button_cancel_on.gif", "/images/button_cancel.gif");
    add_image("MachineMeterDeleteButton", "/images/button_delete2_on.gif", "/images/button_delete2.gif");

    add_image("GridDeleteButton1", "/images/button_delete_on.gif", "/images/button_delete.gif");
    add_image("GridDeleteButton2", "/images/button_delete_on.gif", "/images/button_delete.gif");
    add_image("Cancel2", "/images/button_cancel2_on.gif", "/images/button_cancel2.gif");
  }