var pages = {
             'about':['about.html'],
             'patient':['information.html'],
             'staff':['StaffInfo.html'],
             'reports':['Reports.html'],
             'referrer':['resources.html','news.html'],
             'opportunities':['opportunities.html'],
             'contact':['contact.html']
            };
for(var i in pages) {
  if(in_array(page(document.location.href), pages[i]))
    ID(i).style.display = '';
  else
    ID(i).style.display = 'none';
} 
function in_array(needle,haystack) {
  for(var i in haystack)
    if(haystack[i] == needle)
      return true;
  return false;
}        
function ID(id) {
  return document.getElementById(id);
}   
function page(url) {
  apage = url.substring(url.lastIndexOf('/')+1);
  if(apage.indexOf('#') > 0)
    apage = apage.substring(0, apage.indexOf('#'));
  return apage;
}