function showstuff(id){
   document.getElementById(id).style.visibility="visible";
}

function hidestuff(id){
   document.getElementById(id).style.visibility="hidden";
}

function tog(id){
   if (document.getElementById(id).style.visibility=="visible"){
      document.getElementById(id).style.visibility="hidden";
   }else{
      document.getElementById(id).style.visibility="visible";
   }
}