if (document.images) {
    menu1on = new Image();
    menu1on.src = "templates/www/images/cz-menu-1-hover.gif";
    menu1off = new Image();
    menu1off.src = "templates/www/images/cz-menu-1.gif";
    
    menu2on = new Image();
    menu2on.src = "templates/www/images/cz-menu-2-hover.gif";
    menu2off = new Image();
    menu2off.src = "templates/www/images/cz-menu-2.gif";
    
    menu3on = new Image();
    menu3on.src = "templates/www/images/cz-menu-3-hover.gif";
    menu3off = new Image();
    menu3off.src = "templates/www/images/cz-menu-3.gif";
    
    menu4on = new Image();
    menu4on.src = "templates/www/images/cz-menu-4-hover.gif";
    menu4off = new Image();
    menu4off.src = "templates/www/images/cz-menu-4.gif";
    
    menu5on = new Image();
    menu5on.src = "templates/www/images/cz-menu-5-hover.gif";
    menu5off = new Image();
    menu5off.src = "templates/www/images/cz-menu-5.gif";
}

//----------------------- obrazkove menu
function obr(imgName, over) {
    if (imgName != "") {
        if (over)    {
            if (document.images)
                {
                  imgOn=eval(imgName + "on.src");
                  document[imgName].src= imgOn;
                }
        } else {        
            if (document.images)
                {
                  imgOff=eval(imgName + "off.src");
                  document[imgName].src= imgOff;
                }
        };
    }
}