background=new Image();
background.src="images/backgr_grau.gif";
background2=new Image();
background2.src="images/backgr.gif";

function wechselbackground () { window.document.images['background'].src=background.src; }
function wechselbackground_mo () { window.document.images['background'].src=background2.src; }

info=new Image();
info.src="images/inf_grau.gif";
info2=new Image();
info2.src="images/inf.gif";

function wechselinfo () { window.document.images['info'].src=info.src; }
function wechselinfo_mo () { window.document.images['info'].src=info2.src; }

partner=new Image();
partner.src="images/partner_grau.gif";
partner2=new Image();
partner2.src="images/partner.gif";

function wechselpartner () { window.document.images['partner'].src=partner.src; }
function wechselpartner_mo () { window.document.images['partner'].src=partner2.src; }

news=new Image();
news.src="images/news_grau.gif";
news2=new Image(); news2.src="images/news.gif";

function wechselnews () { window.document.images['news'].src=news.src; }
function wechselnews_mo () { window.document.images['news'].src=news2.src; }

area=new Image();
area.src="images/area_grau.gif";
area2=new Image();
area2.src="images/area.gif";

function wechselarea () { window.document.images['area'].src=area.src; }
function wechselarea_mo () { window.document.images['area'].src=area2.src; }

function menu (i) {

var DOM = (document.getElementById)? true : false;
var OP = (window.opera)? true : false;
var OPF = (OP && DOM)? true : false;
var IE = (document.all && !OP)? true : false;
var IE5 = (IE && DOM)? true : false; var IE4 = (IE && !DOM)? true : false;

 switch(i) {

    case 1: {

           if (screen.width==1280) { left=215 }
           else if (screen.width==800) { left=110; }
           else if (screen.width==848) { left=120; }
           else if (screen.width==1024) { left=155; }
           else if (screen.width==1152) { left=185; }
           else if (screen.width==1360) { left=235; }
           else if (screen.width==1600) { left=295; }
           else if (screen.width==1920) { left=365; }

           if ((navigator.appName=='Netscape') && (navigator.appVersion.charAt(0)<'5')) { }
           else if (navigator.appVersion.charAt (0)<'5' && navigator.appName!='Netscape') {

           var layers=document.all.tags ("div"); }
           else {

           var layers=document.getElementsByTagName("div"); }

           if(IE5 || IE4) { layers['menu1'].style.left=left; }
           else {

           var leftn=document.getElementById("m1").offsetLeft

           layers['menu1'].style.left=leftn+'px'; }

           layers['menu1'].style.visibility='visible';
           layers['menu2'].style.visibility='hidden';

           return;

    }

    case 2: {

           if (screen.width==1280) { left=545; }
           else if (screen.width==800) { left=325;}
           else if (screen.width==848) {  left=345;}
           else if (screen.width==1024) { left=460; }
           else if (screen.width==1152) { left=525; }
           else if (screen.width==1360) { left=635; }
           else if (screen.width==1600) { left=775;}
           else if (screen.width==1920) { left=945;}

           if ((navigator.appName=='Netscape') && (navigator.appVersion.charAt(0)<'5')) { }
           else if (navigator.appVersion.charAt (0)<'5' && navigator.appName!='Netscape') {

           var layers=document.all.tags ("div"); }
           else {

           var layers=document.getElementsByTagName("div"); }

           if(IE5 || IE4) { layers['menu2'].style.left=left; }
           else {

           var leftn=document.getElementById("m2").offsetLeft

           layers['menu2'].style.left=500; }

           layers['menu2'].style.visibility='visible';
           layers['menu1'].style.visibility='hidden';

           return;
         }
    }
 }


 function clean() {

          if (navigator.appVersion.charAt (0)<'5') {
          var layers=document.all.tags ("div"); }
          else {

          var layers=document.getElementsByTagName("div"); }

          layers['menu1'].style.visibility='hidden';
          layers['menu2'].style.visibility='hidden';

          return;

          }