function warten(zeiger){
var x=1; //Verzögerungszeit
if(zeiger == 1)
window.setTimeout("mhome()", x);
if(zeiger == 2)
window.setTimeout("mservice()", x);
if(zeiger == 3)
window.setTimeout("minternet()", x);
if(zeiger == 4)
window.setTimeout("msicherheit()", x);}

function closer(zeiger) {
   if (!document.getElementsByTagName)
      return;
   var mnu = document.getElementById("menu");
   var toplis = mnu.getElementsByTagName("li");
   for (it = 0; it < toplis.length; it++)
   {
      var sublis = toplis[it].getElementsByTagName("li");
      for (is = 0; is < sublis.length; is++)  {
         if (sublis[is].style)
            if (toplis[it].className != 'peter')
              sublis[is].style.display = 'none';
       }
   }
   warten(zeiger);
}

  function mhome( ) {
   if (!document.getElementsByTagName)
      return;
   var mnu = document.getElementById("menu");
   var toplis = mnu.getElementsByTagName("li");
   for (it = 0; it < toplis.length; it++)
   {
      var sublis = toplis[it].getElementsByTagName("li");
      for (is = 0; is < sublis.length; is++)  {
           if (sublis[is].style)
            if (toplis[it].className == 'home')
               sublis[is].style.display = 'block';
      }
   }
}

  function mservice( ) {

   if (!document.getElementsByTagName)
      return;
   var mnu = document.getElementById("menu");
   var toplis = mnu.getElementsByTagName("li");
   for (it = 0; it < toplis.length; it++)
   {
      var sublis = toplis[it].getElementsByTagName("li");
      for (is = 0; is < sublis.length; is++)  {
           if (sublis[is].style)
            if (toplis[it].className == 'service')
               sublis[is].style.display = 'block';
      }
   }
}

 function minternet( ) {

   if (!document.getElementsByTagName)
      return;
   var mnu = document.getElementById("menu");
   var toplis = mnu.getElementsByTagName("li");
   for (it = 0; it < toplis.length; it++)
   {
      var sublis = toplis[it].getElementsByTagName("li");
      for (is = 0; is < sublis.length; is++)  {
           if (sublis[is].style)
            if (toplis[it].className == 'internet')
               sublis[is].style.display = 'block';
      }
   }
}
 function msicherheit( ) {

   if (!document.getElementsByTagName)
      return;
   var mnu = document.getElementById("menu");
   var toplis = mnu.getElementsByTagName("li");
   for (it = 0; it < toplis.length; it++)
   {
      var sublis = toplis[it].getElementsByTagName("li");
      for (is = 0; is < sublis.length; is++)  {
           if (sublis[is].style)
            if (toplis[it].className == 'sicherheit')
               sublis[is].style.display = 'block';
      }
   }
}