// JavaScript Document
function dropmenu(show, hideone, hidetwo)
{
  document.getElementById(show).style.visibility="visible";
  document.getElementById(hideone).style.visibility="hidden";
  document.getElementById(hidetwo).style.visibility="hidden";
}

function hidemenu(show, hideone, hidetwo)
{
  document.getElementById(show).style.visibility="hidden";
  document.getElementById(hideone).style.visibility="hidden";
  document.getElementById(hidetwo).style.visibility="hidden";
}