if (document.images)
{
    // on states //////////////////////////////////////

    event_on = new Image();
    event_on.src = "images/event_on.jpg";

    reason_on = new Image();
    reason_on.src = "images/reason_on.jpg";

    spotlight_on = new Image();
    spotlight_on.src = "images/spotlight_on.jpg";

    highlights_on = new Image();
    highlights_on.src = "images/highlights_on.jpg";

    tickets_on = new Image();
    tickets_on.src = "images/tickets_on.jpg";

    sponsors_on = new Image();
    sponsors_on.src = "images/sponsors_on.jpg";

    info_on = new Image();
    info_on.src = "images/info_on.jpg";


    // off states ////////////////////////////////////

    event_off = new Image();
    event_off.src = "images/event_off.jpg";

    reason_off = new Image();
    reason_off.src = "images/reason_off.jpg";

    spotlight_off = new Image();
    spotlight_off.src = "images/spotlight_off.jpg";

    highlights_off = new Image();
    highlights_off.src = "images/highlights_off.jpg";

    tickets_off = new Image();
    tickets_off.src = "images/tickets_off.jpg";

    sponsors_off = new Image();
    sponsors_off.src = "images/sponsors_off.jpg";

    info_off = new Image();
    info_off.src = "images/info_off.jpg";


    // over states //////////////////////////////////

    event_over = new Image();
    event_over.src = "images/event_over.jpg";

    reason_over = new Image();
    reason_over.src = "images/reason_over.jpg";

    spotlight_over = new Image();
    spotlight_over.src = "images/spotlight_over.jpg";

    highlights_over = new Image();
    highlights_over.src = "images/highlights_over.jpg";

    tickets_over = new Image();
    tickets_over.src = "images/tickets_over.jpg";

    sponsors_over = new Image();
    sponsors_over.src = "images/sponsors_over.jpg";

    info_over = new Image();
    info_over.src = "images/info_over.jpg";
}

function imgOn(imgName)
{
    if (document.images)
    {
         document[imgName].src = eval(imgName + "_over.src");
    }
}

function imgOff(imgName)
{
    if (document.images)
    {
         document[imgName].src = eval(imgName + "_off.src");
    }
}