if (document.images) {


    var hlavnioff = new Image();
    hlavnioff.src = "http://www.calounictvi-tr.cz/extraclean/img1/hlavni.gif";
    var hlavnion = new Image();
    hlavnion.src =  "http://www.calounictvi-tr.cz/extraclean/img1/hlavni1.gif";
    var hlavnidown = new Image();
    hlavnidown.src =  "http://www.calounictvi-tr.cz/extraclean/img1/hlavni1.gif";

    var picoff = new Image();
    picoff.src = "http://www.calounictvi-tr.cz/extraclean/img1/pic.gif";
    var picon = new Image();
    picon.src =  "http://www.calounictvi-tr.cz/extraclean/img1/pic1.gif";
    var picdown = new Image();
    picdown.src =  "http://www.calounictvi-tr.cz/extraclean/img1/pic1.gif";

    var kontaktoff = new Image();
    kontaktoff.src = "http://www.calounictvi-tr.cz/extraclean/img1/kontakt.gif";
    var kontakton = new Image();
    kontakton.src =  "http://www.calounictvi-tr.cz/extraclean/img1/kontakt1.gif";
    var kontaktdown = new Image();
    kontaktdown.src =  "http://www.calounictvi-tr.cz/extraclean/img1/kontakt1.gif";

    var referoff = new Image();
    referoff.src = "http://www.calounictvi-tr.cz/extraclean/img1/refer.gif";
    var referon = new Image();
    referon.src =  "http://www.calounictvi-tr.cz/extraclean/img1/refer1.gif";
    var referdown = new Image();
    referdown.src =  "http://www.calounictvi-tr.cz/extraclean/img1/refer1.gif";

    var fotooff = new Image();
    fotooff.src = "http://www.calounictvi-tr.cz/extraclean/img1/foto.gif";
    var fotoon = new Image();
    fotoon.src =  "http://www.calounictvi-tr.cz/extraclean/img1/foto1.gif";
    var fotodown = new Image();
    fotodown.src =  "http://www.calounictvi-tr.cz/extraclean/img1/foto1.gif";

    var cenikoff = new Image();
    cenikoff.src = "http://www.calounictvi-tr.cz/extraclean/img1/cenik.gif";
    var cenikon = new Image();
    cenikon.src =  "http://www.calounictvi-tr.cz/extraclean/img1/cenik1.gif";
    var cenikdown = new Image();
    cenikdown.src =  "http://www.calounictvi-tr.cz/extraclean/img1/cenik1.gif";


    var etoff = new Image();
    etoff.src = "http://www.calounictvi-tr.cz/extraclean/img1/et.gif";
    var eton = new Image();
    eton.src =  "http://www.calounictvi-tr.cz/extraclean/img1/et1.gif";
    var etdown = new Image();
    etdown.src =  "http://www.calounictvi-tr.cz/extraclean/img1/et1.gif";

}

function getOff(nom)
    {
    if (document.images) {
        document.images[nom].src = eval(nom + 'off').src;
    }
}
function getOn(nom)
    {
    if (document.images) {
        document.images[nom].src = eval(nom + 'on').src;
    }
}
function getDown(nom)
    {
    if (document.images) {
        document.images[nom].src = eval(nom + 'down').src;
    }
}