var zeit = 0;

function submenu(n)  {
  if  (document.getElementById) {
      name='un'; name+=n;
      document.getElementById(name).className = 'unav';
      name='sp'; name+=n;
      document.getElementById(name).className = 'vorn';
   }
}

function zurueck(n)  {
  if  (document.getElementById) {
     name='un'; name+=n;
     document.getElementById(name).className = 'hide';
     name='sp'; name+=n;
     document.getElementById(name).className = '';
  }
}

function pos()  {
  if (document.getElementById)  {
    if (window.innerWidth) {
      y = window.pageYOffset;
      x = y + window.innerHeight - 60;
      if ((x>270)&&(y>190))  {
        document.getElementById("oben").style.visibility="visible";
        document.getElementById("oben").style.top = x+"px";
      }
      else document.getElementById("oben").style.visibility="hidden";
      zeit = setTimeout("pos()",100);
    }
    else document.getElementById("oben").style.visibility="hidden";
  }
}

function em(em1,em2,em3,em4,em5,em6,em7)  {
 if  (document.getElementById) {
  ad = em5+'@'+em1+'.'+em4;
  if (em7) ad2 = em7; else ad2 = ad; 
  ht = em6 + '<a href="mailto:'+ ad + '">' + ad2 + '</a>';
  document.getElementById(em2).innerHTML = ht;
 }
}