function menuIE6() {
  if(window.navigator.systemLanguage && !window.navigator.language) {
    window.onload=hoverIE;
  }
}  

function hoverIE() {
  var LI = document.getElementById("menu").firstChild;
  do {
    if (sucheUL(LI.firstChild)) {
      LI.onmouseover=einblenden; LI.onmouseout=ausblenden;
    }
    LI = LI.nextSibling;
  }
  while(LI);
}

function sucheUL(UL) {
  do {
    if(UL) UL = UL.nextSibling;
    if(UL && UL.nodeName == "UL") return UL;
  }
  while(UL);
  return false;
}

function einblenden() {
  var UL = sucheUL(this.firstChild);
  UL.style.display = "block"; 
  UL.style.backgroundColor = "#ccc";
}

function ausblenden() {
  sucheUL(this.firstChild).style.display = "none";
}