dom = ((parseInt(navigator.appVersion) >= 5) || (navigator.appVersion.indexOf("MSIE 5") != -1)) ? 1 : 0;

    ns = ((navigator.appName.indexOf('Netscape')!=-1) && (navigator.appVersion.substring(0, 1) >= '4') && (! dom)) ? 1 : 0;
    ie = ((document.all) && (! dom)) ? 1 : 0;

    no_dhtml = ((! dom) && (! ie) && (! ns)) ? 1 : 0;


    function getImage(sender) {
        if (ns) {
            eval("ret = document.navidiv.document."+sender+".src;");
        } else {
            eval("ret = document."+sender+".src;");
        }
        return ret;
    }

    function setImage(sender, status) {
        if (status == 1) bild = "/img/kasten.gif";
        else bild = "/img/spacer.gif";
        if (ns) {
            eval("document.navidiv.document."+sender+".src=bild;");
        } else {
            eval("document."+sender+".src=bild;");
        }
    }

    img_pressed = "i<?= $nummer_parts[0] ?>_0";

    function mouseOver(sender) {
        setImage(sender, 1);
    }

    function mouseOut(sender) {
        if (sender != img_pressed) setImage(sender, 0);
    }

    function showtn(file) {
         var popupWindow = window.open('showtn.html?file='+ file, 'popupWindow', 'menubar=no,scrollbars=yes,resizable=yes,width=550,height=450,innerHeight=550,innerWidth=314');
         popupWindow.focus();
     }

    function impressum() {
        var popupWindow = window.open("/impressum.html", 'popupWindow', 'menubar=no,scrollbars=yes,resizable=yes,width=550,height=450,innerWidth=550,innerHeight=314');
        popupWindow.focus();
    }

    function datenschutz() {
        var popupWindow = window.open("/datenschutz.html", 'popupWindow', 'menubar=no,scrollbars=yes,resizable=yes,width=550,height=450,innerWidth=550,innerHeight=314');
        popupWindow.focus();
    }