if (document.images) {
    sub_mor_far_on = new Image(100, 20);sub_mor_far_on.src = '/images/sub_mor_far_on.gif';
    sub_mor_far_off = new Image(100, 20);sub_mor_far_off.src = '/images/sub_mor_far_off.gif';
    sub_viktor_on = new Image(100, 20);sub_viktor_on.src = '/images/sub_viktor_on.gif';
    sub_viktor_off = new Image(100, 20);sub_viktor_off.src = '/images/sub_viktor_off.gif';
    sub_dop_on = new Image(100, 20);sub_dop_on.src = '/images/sub_dop_on.gif';
    sub_dop_off = new Image(100, 20);sub_dop_off.src = '/images/sub_dop_off.gif';
    sub_contact_on = new Image(100, 20);sub_contact_on.src = '/images/sub_contact_on.gif';
    sub_contact_off = new Image(100, 20);sub_contact_off.src = '/images/sub_contact_off.gif';
    next_on = new Image(15, 15);next_on.src = '/images/next_on.gif';
    next_off = new Image(15, 15);next_off.src = '/images/next_off.gif';
    back_on = new Image(15, 15);back_on.src = '/images/back_on.gif';
    back_off = new Image(15, 15);back_off.src = '/images/back_off.gif';
}

function di(id,value){
    if (document.images) {
        document.images[id].src=eval(id +'_'+ value +'.src');
    }
}