function switchlayer(Layer_Name)
{
  var GECKO = document.getElementById? 1:0 ;
  var NS = document.layers? 1:0 ;
  var IE = document.all? 1:0 ;
  if (GECKO)
   {
    if (Layer_Name == 'aktuell')
     {
      document.getElementById('infos').style.visibility='hidden';
      document.getElementById('va').style.visibility='hidden';
      document.getElementById('shop').style.visibility='hidden';
      document.getElementById('suchen').style.visibility='hidden';
     }
    if (Layer_Name == 'infos')
     {
      document.getElementById('aktuell').style.visibility='hidden';
      document.getElementById('va').style.visibility='hidden';
      document.getElementById('shop').style.visibility='hidden';
      document.getElementById('suchen').style.visibility='hidden';
     }
    if (Layer_Name == 'va')
     {
      document.getElementById('infos').style.visibility='hidden';
      document.getElementById('aktuell').style.visibility='hidden';
      document.getElementById('shop').style.visibility='hidden';
      document.getElementById('suchen').style.visibility='hidden';
    }
   if (Layer_Name == 'suchen')
     {
      document.getElementById('infos').style.visibility='hidden';
      document.getElementById('aktuell').style.visibility='hidden';
       document.getElementById('shop').style.visibility='hidden';
     document.getElementById('va').style.visibility='hidden';
    }
   if (Layer_Name == 'shop')
     {
      document.getElementById('infos').style.visibility='hidden';
      document.getElementById('aktuell').style.visibility='hidden';
       document.getElementById('va').style.visibility='hidden';
     document.getElementById('suchen').style.visibility='hidden';
    }
   document.getElementById(Layer_Name).style.visibility=(document.getElementById(Layer_Name).style.visibility=='visible') ? 'hidden' : 'visible';
   }
  else if (NS)
   {
    if (Layer_Name == 'aktuell')
     {
      document.layers['infos'].visibility='hidden';
      document.layers['va'].visibility='hidden';
      document.layers['suchen'].visibility='hidden';
      document.layers['shop'].visibility='hidden';
     }
    if (Layer_Name == 'infos')
     {
      document.layers['aktuell'].visibility='hidden';
      document.layers['shop'].visibility='hidden';
      document.layers['va'].visibility='hidden';
      document.layers['suchen'].visibility='hidden';
     }
    if (Layer_Name == 'va')
     {
      document.layers['aktuell'].visibility='hidden';
      document.layers['infos'].visibility='hidden';
      document.layers['shop'].visibility='hidden';
      document.layers['suchen'].visibility='hidden';
     }   
    if (Layer_Name == 'suchen')
     {
      document.layers['aktuell'].visibility='hidden';
      document.layers['infos'].visibility='hidden';
      document.layers['shop'].visibility='hidden';
      document.layers['va'].visibility='hidden';
     }   
    if (Layer_Name == 'shop')
     {
      document.layers['aktuell'].visibility='hidden';
      document.layers['infos'].visibility='hidden';
      document.layers['va'].visibility='hidden';
      document.layers['suchen'].visibility='hidden';
     }   
    document.layers[Layer_Name].visibility=(document.layers[Layer_Name].visibility=='visible') ? 'hidden' : 'visible';
   }
  else if (IE)
   {
    if (Layer_Name == 'aktuell')
     {
      document.all['infos'].style.visibility='hidden';
      document.all['va'].style.visibility='hidden';
      document.all['suchen'].style.visibility='hidden';
      document.all['shop'].style.visibility='hidden';
     }
    if (Layer_Name == 'infos')
     {
      document.all['aktuell'].style.visibility='hidden';
      document.all['va'].style.visibility='hidden';
      document.all['suchen'].style.visibility='hidden';
      document.all['shop'].style.visibility='hidden';
     }
    if (Layer_Name == 'va')
     {
      document.all['aktuell'].style.visibility='hidden';
      document.all['infos'].style.visibility='hidden';
      document.all['suchen'].style.visibility='hidden';
      document.all['shop'].style.visibility='hidden';
     }
    if (Layer_Name == 'suchen')
     {
      document.all['aktuell'].style.visibility='hidden';
      document.all['infos'].style.visibility='hidden';
      document.all['va'].style.visibility='hidden';
      document.all['shop'].style.visibility='hidden';
     }
    if (Layer_Name == 'shop')
     {
      document.all['aktuell'].style.visibility='hidden';
      document.all['infos'].style.visibility='hidden';
      document.all['va'].style.visibility='hidden';
      document.all['suchen'].style.visibility='hidden';
     }
   document.all[Layer_Name].style.visibility=(document.all[Layer_Name].style.visibility=='visible') ? 'hidden' : 'visible';
   }  
}

function mausover(mnum)
{
  var GECKO = document.getElementById? 1:0 ;
  var NS = document.layers? 1:0 ;
  var IE = document.all? 1:0 ;
  if (GECKO)
   {
   document.getElementById(mnum).style.color='#FF3300';
   }
  else if (NS)
   {
   document.layers[mnum].color='#FF3300';
   }
  else if (IE)
   {
   document.all[mnum].style.color='#FF3300';
   }  
}

function mausout(mnum)
{
  var GECKO = document.getElementById? 1:0 ;
  var NS = document.layers? 1:0 ;
  var IE = document.all? 1:0 ;
  if (GECKO)
   {
   document.getElementById(mnum).style.color='#000000';
   }
  else if (NS)
   {
   document.layers[mnum].color='#000000';
   }
  else if (IE)
   {
   document.all[mnum].style.color='#000000';
   }  
}