function Fensterhoehe () {
  if (window.innerHeight) {
   // alert('innerheight'); 
    return window.innerHeight;
  }   else if (document.documentElement.clientHeight >0) {
//alert('Hallo'+document.documentElement.clientHeight);    
return document.documentElement.clientHeight ;
   

 }  else if (document.body && document.body.offsetHeight){
     // alert('offsetheight'+document.body.offsetHeight);  
 return(document.body.offsetHeight);
  
}

}

function neuAufbau () {
    Hoehe = Fensterhoehe();
    //alert(Hoehe);	
    divHoehe = Hoehe-146;
    //alert(divHoehe);
    divWin = document.getElementById("contentDiv");
    divWin.style.height = divHoehe +"px";
    
    //footerWin = document.getElementById("footDiv");
  
   //if (navigator.name == "Internet Explorer") {
   //     var IEDiff = 27;
   //}
   //var footerXY = (divHoehe+113+IEDiff);
   //var footerXY = divHoehe;

    //footerWin.style.top = footerXY + "px";
   
   //alert(footerXY);
}