var new_window = null;
  
  function info() {
   parent.frames[3].location.href = "info_a.html";
   parent.frames[2].location.href = "info_head.html";
   parent.frames[1].location.href = "info_location.html";
 }
  
  function kontakt() {
   parent.frames[3].location.href = "kontakt.html";
   parent.frames[2].location.href = "kontakt_head.html";
   parent.frames[1].location.href =  "kontakt_location.html";
}
  
  function homep()
  {  
   parent.frames[3].location.href = "deckblatt_fin.html";
   parent.frames[2].location.href = "leer3.html";
   parent.frames[1].location.href =  "deckblatt_head.html";
  }
    function therm()
  {  
   parent.frames[3].location.href = "1a.html";
   parent.frames[2].location.href = "1_head.html";
   parent.frames[1].location.href =  "1_location.html";
  }
  
  function baro()
  {  
   parent.frames[3].location.href = "12a.html";
   parent.frames[2].location.href = "12_head.html";
   parent.frames[1].location.href =  "12_location.html";
  }
  
  function hygro()
  {  
   parent.frames[3].location.href = "15a.html";
   parent.frames[2].location.href = "15_head.html";
   parent.frames[1].location.href =  "15_location.html";
  }
  
  function wetter()
  {  
   parent.frames[3].location.href = "18a.html";
   parent.frames[2].location.href = "18_head.html";
   parent.frames[1].location.href =  "18_location.html";
  }
  
  function diginstr()
  {  
   parent.frames[3].location.href = "21a.html";
   parent.frames[2].location.href = "21_head.html";
   parent.frames[1].location.href =  "21_location.html";
  }

  function diverse()
  {  
   parent.frames[3].location.href = "22a.html";
   parent.frames[2].location.href = "22_head.html";
   parent.frames[1].location.href =  "22_location.html";
  }

  function werbung()
  {  
   parent.frames[3].location.href = "werbung_a.html";
   parent.frames[2].location.href = "werbung_head.html";
   parent.frames[1].location.href =  "werbung_location.html";
  }