function ShowMA()
{
  var at=String.fromCharCode(64);
  var mt="mai" +"lto"+":";
  var em="empfang";
  var htm="htm-design"+"."+"at";
  document.write('<a href="'+mt+em+at+htm+'">'+em+at+htm);
  document.write('</a>');
}

// für die verschachtelte expandierende Navigation 
function toggle(id)
  {
    ul = "ul_" + id;
    img = "img_" + id;
    ulElement = document.getElementById(ul);
    imgElement = document.getElementById(img);
	
    if (ulElement)
	  {
      if (ulElement.className == 'closed')
	    {
        ulElement.className = "open";
        imgElement.src = "opened.gif";
        }
	  else
	    {
        ulElement.className = "closed";
        imgElement.src = "closed.gif";
        }
      }
  }