function exec_hover(textelem, id, method)
{
  var elem = document.getElementById("marker" + id);

  // Prüfen ob Mauszeige in das oder aus dem Element mit weißem Hintergrund bewegt wird.
  if ((method == "in") && (id < 7))
  {
    textelem.style.backgroundColor = '#F2F2F2';
    elem.style.backgroundColor     = '#FFEE00';
  }
  else if ((method == "out") && (id < 7))
  {
    textelem.style.backgroundColor = '';
    elem.style.backgroundColor     = '';
  }

  // Prüfen ob Mauszeige in das oder aus dem Element mit schwarzem Hintergrund bewegt wird.
  if ((method == "in") && (id >= 7))
  {
    textelem.style.backgroundColor = '#363636';
    elem.style.backgroundColor     = '#FFEE00';
  }
  else if ((method == "out") && (id >= 7))
  {
    textelem.style.backgroundColor = '';
    elem.style.backgroundColor     = '';
  }
}

function show_desc (divelem, id)
{
  var paragraph = document.getElementById("desc_" + id);
  if (divelem.style.backgroundImage != "none")
  {
    divelem.style.backgroundImage = "none";
    paragraph.style.color = "#AEB0AF";
  }
  else
  {
    divelem.style.backgroundImage = "url('img/elements/square70.gif')";
    paragraph.style.color = "";
  }
}