function an1() 
{document.getElementById('inhalt1').style.display = 'block';} 

function aus1() 
{document.getElementById('inhalt1').style.display = 'none';} 

function an2() 
{document.getElementById('inhalt2').style.display = 'block';} 

function aus2() 
{document.getElementById('inhalt2').style.display = 'none';} 

function an3() 
{document.getElementById('inhalt3').style.display = 'block';} 

function aus3() 
{document.getElementById('inhalt3').style.display = 'none';} 

function an4() 
{document.getElementById('inhalt4').style.display = 'block';} 

function aus4() 
{document.getElementById('inhalt4').style.display = 'none';} 


function an5() 
{document.getElementById('inhalt5').style.display = 'block';} 

function aus5() 
{document.getElementById('inhalt5').style.display = 'none';} 

function an6() 
{document.getElementById('inhalt6').style.display = 'block';} 

function aus6() 
{document.getElementById('inhalt6').style.display = 'none';} 

function an7() 
{document.getElementById('inhalt7').style.display = 'block';} 

function aus7() 
{document.getElementById('inhalt7').style.display = 'none';} 

function an8() 
{document.getElementById('inhalt8').style.display = 'block';} 

function aus8() 
{document.getElementById('inhalt8').style.display = 'none';} 

function an9() 
{document.getElementById('inhalt9').style.display = 'block';} 

function aus9() 
{document.getElementById('inhalt9').style.display = 'none';} 

function an10() 
{document.getElementById('inhalt10').style.display = 'block';} 

function aus10() 
{document.getElementById('inhalt10').style.display = 'none';} 



function MenueAuf(Men)
{
  if(document.getElementById)
  {
    document.getElementById(Men).style.visibility="visible";
  }

  else if(document.all && !document.getElementById)
  {
    document.all[Men].style.visibility="visible";
  }
}

function MenueZu(Men)
{
  if(document.getElementById)
  {
    document.getElementById(Men).style.visibility="hidden";
  }

  else if(document.all && !document.getElementById)
  {
    document.all[Men].style.visibility="hidden";
  }
}