function showbox(boxid){
   document.getElementById(boxid).style.display="block";
}

function hidebox(boxid){
   document.getElementById(boxid).style.display="none";
}
function showvis(boxid){
   document.getElementById(boxid).style.visibility="visible";
}

function hidevis(boxid){
   document.getElementById(boxid).style.visibility="hidden";
}