aktiv="";

function over(imgName)
{
if (aktiv!="")
{
dom(aktiv).src="img/"+aktiv+"_off.gif";
}
dom(imgName).src="img/"+imgName+"_on.gif";
aktiv=imgName;
}

function out(imgName)
{
dom(imgName).src="img/"+imgName+"_off.gif";
}

wer="";

function doclick(ebene)
{
if (wer!="")
{
domstyle(wer).visibility= "hidden";
domstyle(wer+"1").visibility= "hidden";
}
domstyle(ebene).visibility= "visible";
domstyle(ebene+"1").visibility= "visible";
wer=ebene;
}

<!-- 
var remotewin;

function openwin(url,w,h,sx,sy,lbar,mbar,rez,scr,stat)
{
  var params="";
  params+="width="+w+",height="+h;
  if (sx + "xxx" != "xxx") params+=",left="+sx;
  if (sy + "xxx" != "xxx") params+=",top="+sy;
  if (lbar + "xxx" != "xxx") params += ",location=" + lbar;
  if (mbar + "xxx" != "xxx") params += ",menubar=" + mbar;
  if (rez + "xxx" != "xxx")  params += ",resizable=" + rez;
  if (scr + "xxx" != "xxx")  params += ",scrollbars=" + scr;
  if (stat + "xxx" != "xxx") params += ",status=" + stat;
  remotewin = window.open("","popup",params);
  if (url + "xxx" != "xxx") remotewin.location.href = url;
  if (remotewin.opener == null) remotewin.opener = window;
  remotewin.focus();
}

function go2link(url) { opener.location.href=url; }
function go2link_close(url) { opener.location.href=url; self.close(); }

//-->