if (document.images)       
{

    menu01on = new Image();
    menu01on.src = "./images/menu_on/strona_glowna_on.jpg";
    menu01off = new Image();
    menu01off.src = "./images/strona_glowna_off.jpg";

    menu02on = new Image();
    menu02on.src = "./images/menu_on/zakres_terytorialny_on.jpg";
    menu02off = new Image();
    menu02off.src = "./images/zakres_terytorialny_off.jpg";
    
    menu03on = new Image();
    menu03on.src = "./images/menu_on/wnioski_egzekucyjne_on.jpg";
    menu03off = new Image();
    menu03off.src = "./images/wnioski_egzekucyjne_off.jpg";
    
    menu04on = new Image();
    menu04on.src = "./images/menu_on/licytacje_on.jpg";
    menu04off = new Image();
    menu04off.src = "./images/licytacje_off.jpg";
    
    menu05on = new Image();
    menu05on.src = "./images/menu_on/kontakt_on.jpg";
    menu05off = new Image();
    menu05off.src = "./images/kontakt_off.jpg";
}

function myszover(name)
{        if (document.images)
    {        document.images[name].src = eval (name + "on.src");
    }
}

function myszout(name)
{        if (document.images)
    {        document.images[name].src = eval (name + "off.src");
    }
}

function myszclick(name)
{        if (document.images)
    {        document.images[name].src = eval (name + "off.src");
    }
}