function preloadImg()
{ 
  img_menue=new Image(); //globale Variable
  img_menue.src="../../images/bgnd_ROben.gif";
}


function gerade(k)
{return !(k%2);}


function callPage(elem)
{
var ch=elem.childNodes;
var td_parent=elem.parentNode;
var knoten=td_parent.firstChild;
   
var i=1;
while (knoten!=null)
{
knoten=knoten.nextSibling;
if (knoten!=null && gerade(i) )
   {
    knoten.background='';
    knoten.bgColor='dddddd';
   }
i++;
}
elem.background=img_menue.src;
document.frames["iframe_a"].location.href=ch[0].getAttribute("href");
}

function callPage2(elem)
{

var ch=elem.childNodes;
var td_parent=elem.parentNode;
var knoten=td_parent.firstChild;
   
var i=1;
while (knoten!=null)
{
knoten=knoten.nextSibling;
if (knoten!=null && gerade(i) )
   {
    knoten.background='';
    knoten.bgColor='dddddd';
   }
i++;
}
elem.background=img_menue.src;
location.href=ch[0].getAttribute("href");
}



  preloadImg();