var openmenu="menu1";
if(document.layers)
   {window.captureEvents(Event.MOUSEDOWN);
    window.onmousedown=ausblenden;
   } else
   {document.onclick=ausblenden;
   }

function einblenden(param)
{   openmenu=param;
    if (document.layers)
    document.layers[openmenu].visibility ="show";
    else if (document.all)
    document.all[openmenu].style.visibility ="visible";
    else if (document.documentElement)
    document.getElementById(openmenu).style.visibility = "visible";
    else if (document.getElementById)
    document.getElementById(openmenu).style.visibility = "visible";
}

function ausblenden()
{   if (document.layers)
    document.layers[openmenu].visibility="hide";
    else if (document.all)
    document.all[openmenu].style.visibility="hidden";
    else if (document.documentElement)
    document.getElementById(openmenu).style.visibility = "hidden";
    else if (document.getElementById)
    document.getElementById(openmenu).style.visibility = "hidden";
}

var openIt="menua";
if(document.layers)
   {window.captureEvents(Event.MOUSEDOWN);
    window.onmousedown=ausblenden;
   } else
   {document.onclick=ausblenden;
   }

function ein(param)
{   openIt=param;
    if (document.layers)
    document.layers[openIt].visibility ="show";
    else
    document.all[openIt].style.visibility ="visible";
}

function aus()
{   if (document.layers)
    document.layers[openIt].visibility="hide";
    else
    document.all[openIt].style.visibility="hidden";
}

var openIt="menua";
if(document.layers)
   {window.captureEvents(Event.MOUSEDOWN);
    window.onmousedown=ausblenden;
   } else
   {document.onclick=ausblenden;
   }

function ein(param)
{   openIt=param;
    if (document.layers)
    document.layers[openIt].visibility ="show";
    else if (document.all)
    document.all[openIt].style.visibility ="visible";
    else if (document.documentElement)
    document.getElementById(openIt).style.visibility ="visible";
}

function aus()
{   if (document.layers)
    document.layers[openIt].visibility="hide";
    else if (document.all)
    document.all[openIt].style.visibility="hidden";
    else if (document.documentElement)
    document.getElementById(openIt).style.visibility ="hidden";
}