function show_search(){
  xpos = (document.getElementById && !document.all) ? e.pageX : document.body.scrollLeft + event.clientX;
  obj=document.getElementById('suche').style;
  obj.left=xpos-75;
  if(obj.visibility=="visible")obj.visibility="hidden"; else obj.visibility="visible";
  if(obj.visibility=="visible")document.search.begriff.focus();
  document.search.begriff.value="";
  return false;
}