function grafiken(){
    this.length = grafiken.arguments.length;

    for (var i = 0; i < this.length; i++) {
        this[i+1] = new Image();
        this[i+1].src = imgpath+grafiken.arguments[i];
    }
}

function ein(name) {
    if (document.images) {
        document.images[name].src = imgpath+name+"_on.gif";
    }
}

function aus(name) {
    if( name == "" ) {
        return;
    }
    postfix = "_off";
    if( name == currentContent ) {
        postfix = "_on";
    }
    if (document.images) {
        document.images[name].src = imgpath+name+postfix+".gif";
    }
}

function goSubhome(i,content,bild) {
    if (document.images) {
        var oldCC = currentContent;
        currentContent = bild;
        aus( oldCC );
        window.location = document.links[i].href;
    }
}

imgpath="http://www.frankfurt-main.ihk.de/img/nav/";
currentContent="";


function line_1(name)   {
document.images[name].src = eval(name + "_1.src");
}
function line_2(name)   {
document.images[name].src = eval(name + "_2.src");
}
function line_out(name)   {
document.images[name].src = eval(name + ".src");
}

var bu_line_1 = new Image();
bu_line_1.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line.gif";
var bu_line_1_1 = new Image();
bu_line_1_1.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line_1_1.gif";
var bu_line_1_2 = new Image();
bu_line_1_2.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line_1_2.gif";

var bu_line_2 = new Image();
bu_line_2.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line.gif";
var bu_line_2_1 = new Image();
bu_line_2_1.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line_2_1.gif";
var bu_line_2_2 = new Image();
bu_line_2_2.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line_2_2.gif";

var bu_line_3 = new Image();
bu_line_3.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line.gif";
var bu_line_3_1 = new Image();
bu_line_3_1.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line_3_1.gif";
var bu_line_3_2 = new Image();
bu_line_3_2.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line_3_2.gif";

var bu_line_4 = new Image();
bu_line_4.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line.gif";
var bu_line_4_1 = new Image();
bu_line_4_1.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line_4_1.gif";
var bu_line_4_2 = new Image();
bu_line_4_2.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line_4_2.gif";

var bu_line_5 = new Image();
bu_line_5.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line.gif";
var bu_line_5_1 = new Image();
bu_line_5_1.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line_5_1.gif";
var bu_line_5_2 = new Image();
bu_line_5_2.src = "http://www.frankfurt-main.ihk.de/img/nav/bu_line_5_2.gif";

/* Bildbeschreibung: 

(Die erste Zahl ist die Nr. des Balkens der ausgetauscht wird,
die zweite der jeweilige Zustand.)

bu_line_1_1 = rot
bu_line_1_2 = orange

bu_line_2_1 = orange
bu_line_2_2 = gelb

bu_line_3_1 = gelb
bu_line_3_2 = grün

bu_line_4_1 = grün
bu_line_4_2 = blau

bu_line_5_1 = blau
bu_line_5_2 = lila

*/

function kontakt() {
     var stuff = "resizable=yes,"
                     + "width=400,"
                     + "height=200,"
                     + "scrollbars=yes,"
                     + "status=no";
     var url = "/cgi-bin/kontakt.cgi";
     var win = window.open(url, 'AuswahlKontaktperson', stuff);
      if(win.focus) win.focus();
     }