// hidden div script 
// link - <a href="javascript:unhide('divid');"></a>
// (use this <a> to show the hidden div, with "divid" being the id="" set up for the hidden div)
// same link rehides the div

// div - <div id="divID" class="hidden"></div>
// (this is how the div should be set up, note the id="")

// css - .hidden { visibility: hidden; }
// css - .unhidden { visibility: visible; } (these must be in your css)
function unhide(divID) {
  var item = document.getElementById(divID);
  if (item) {
    item.className=(item.className=='hidden')?'unhidden':'hidden';
  }
}