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";
}
}