// dropdown-menu-funktionen

    function findObject(n, d) {
        var p, i, x;
        if (!d) {
            d = document;
        }
        if ((p = n.indexOf("?")) > 0 && parent.frames.length) {
            d = parent.frames[n.substring(p + 1)].document;
            n = n.substring(0, p);
        }
        if (!(x = d[n]) && d.all) {
            x = d.all[n];
        }
        for (i = 0; !x && i < d.forms.length; i++) {
            x = d.forms[i][n];
        }
        for (i = 0; !x && d.layers && i < d.layers.length; i++) {
            x = findObject(n, d.layers[i].document);
        }
        if (!x && d.getElementById) {
            x = d.getElementById(n);
        }
        return x;
    }


    function dropdownSet() {
		// suffix der images-src
        document.ImageOver = "_on";
        document.ImageDown = "_on";
        var dt = false;
        if (document.getElementsByTagName) {
            dt = true;
        }
        if (document.ImageBar) {
            return;
        }
        var i, k = -1, g, x, gg, tl, ts, ti, tm, tt, tsn, tu, el, args = dropdownSet.arguments;
        ImageProp = new Array();
        for (i = 0; i < args.length; i++) {
            ImageProp[i] = args[i];
        }
        MainImage = new Array();
        SubMenu = new Array();
        if (dt) {
            tm = document.getElementsByTagName("IMG");
        } else {
            tm = document.images;
        }
        tm = document.images;
        tt = new Array();
        tt = tt.concat(tm);
        if (document.layers) {
            for (i = 0; i < document.layers.length; i++) {
                ti = document.layers[i].document.images;
                if (ti) {
                    tt = tt.concat(ti);
                }
                for (x = 0; x < document.layers[i].document.layers.length; x++) {
                    ti = document.layers[i].document.layers[x].document.images;
                    if (ti) {
                        tt = tt.concat(ti);
                    }
                }
            }
            tm = tt;
        }
        for (i = 0; i < tm.length; i++) {
            tl = tm[i].name;
            if (dt && !tl) {
                tl = tm[i].id;
            }
            if (tl && tl.indexOf("mainimg_") == 0) {
                ts = tl.replace("mainimg_", "");
                tsn = "submenu_" + ts;
                k++;
                MainImage[k] = tl;
                if ((g = findObject(tsn)) != null) {
                    SubMenu[k] = tsn;
                    gg = (document.layers) ? g : g.style;
                    gg.visibility = "hidden";
                } else {
                    SubMenu[k] = "N";
                }
            }
        }
        document.SwapDown = new Array();
        document.SwapOver = new Array();
        for (i = 0; i < MainImage.length; i++) {
            g = findObject(MainImage[i]);
            gg = g.src;
            g.mainimg = g.src;
            tu = gg.lastIndexOf(".");
            g.mainimgo = gg.substring(0, tu) + document.ImageOver + gg.substring(tu, gg.length);
            g.mainimgd = gg.substring(0, tu) + document.ImageDown + gg.substring(tu, gg.length);
            if (ImageProp[2] > 1) {
                document.SwapOver[i] = new Image();
                document.SwapOver[i].src = g.mainimgo;
            }
            if (ImageProp[2] > 0) {
                if (ImageProp[2] == 3) {
                    g.mainimgd = g.mainimgo;
                }
                document.SwapDown[i] = new Image();
                document.SwapDown[i].src = g.mainimgd;
            }
        }
        if ((g = findObject("ResetSensor")) != null) {
            gg = (document.layers) ? g : g.style;
            gg.visibility = "hidden";
        }
        if (dt && ImageProp[3] != "none" && !window.opera) {
            g = document.getElementsByTagName("A");
            for (i = 0; i < g.length; i++) {
                if (g[i].hasChildNodes()) {
                    el = g[i].firstChild;
                    while (el) {
                        if (el.nodeType == 3) {
                            gg = el.nodeValue;
                            if (ImageProp[3] == gg.replace("\n", "")) {
                                g[i].className = ImageProp[4];
                                break;
                            }
                        }
                        el = el.firstChild;
                    }
                }
            }
        }
        document.ImageBar = true;
    }



    function dropdownTrigger(bu) {
        if (!document.ImageBar) {
            return;
        }
        var i, g, d, dB = -1, tF = false, sF = false;
        for (i = 0; i < SubMenu.length; i++) {
            sF = false;
            if ((g = findObject(SubMenu[i])) != null) {
                g = findObject(SubMenu[i]);
                gg = (document.layers) ? g : g.style;
                sF = true;
            }
            d = findObject(MainImage[i]);
            if (MainImage[i] == ImageProp[0]) {
                dB = i;
            }
            if (MainImage[i] == bu) {
                tF = true;
                if (sF) {
                    gg.visibility = "visible";
                }
                if (ImageProp[2] > 0) {
                    if (i == dB) {
                        d.src = d.mainimgd;
                    } else {
                        if (ImageProp[2] > 1) {
                            d.src = d.mainimgo;
                        }
                    }
                }
                if ((g = findObject("ResetSensor")) != null) {
                    gg = (document.layers) ? g : g.style;
                    gg.visibility = "visible";
                }
            } else {
                if (sF) {
                    gg.visibility = "hidden";
                }
                if (ImageProp[2] > 0) {
                    d.src = d.mainimg;
                }
            }
        }
        if (!tF) {
            if (dB > -1) {
                d = findObject(MainImage[dB]);
                if ((g = findObject(SubMenu[dB])) != null &&
                    ImageProp[1] == 0) {
                    gg = (document.layers) ? g : g.style;
                    gg.visibility = "visible";
                }
                if (ImageProp[2] > 0) {
                    d.src = d.mainimgd;
                }
            }
            if ((g = findObject("ResetSensor")) != null) {
                gg = (document.layers) ? g : g.style;
                gg.visibility = "hidden"
            }
        }
    }