function mouseover(menu_id){

    if(document.getElementById)
    {
      try{
        document.getElementById('navi2-current').parentNode.style.visibility='hidden';
      }catch(e){}

      try{
        document.getElementById(menu_id).style.visibility='visible';
      }catch(e){}
    }

    else if(document.all && !document.getElementById)
    {
      try{
        document.all['navi2-current'].parentNode.style.visibility='hidden';
      }catch(e){}

      try{
        document.all[menu_id].style.visibility='visible';
      }catch(e){}
    }

}

function mouseout(menu_id){

    if(document.getElementById)
    {
      try{
        document.getElementById(menu_id).style.visibility='hidden';
      }catch(e){}

      try{
        document.getElementById('navi2-current').parentNode.style.visibility='visible';
      }catch(e){}
    }

    else if(document.all && !document.getElementById)
    {
      try{
        document.all[menu_id].style.visibility='hidden';
      }catch(e){}

      try{
        document.all['navi2-current'].parentNode.style.visibility='visible';
      }catch(e){}
    }

}

function changeimg(Source){
  document.getElementsByName('subpage-left-block-img')[0].src = Source.src;
}

function popupWindow(url, width, height){
    var name = "PopupFenster";
    var features = "resize=no,scrollbars=no,status=no,width=" + (width+20) + ",height=" + (height+20) + ",left=40,top=40";
    window.open(url,name,features);
}