//clicked link remains black
function changeClassTopNav(id, newClass)
{
  var identity=document.getElementById('home');
  identity.className='worktext';
  identity=document.getElementById('highlights');
  identity.className='worktext';
  identity=document.getElementById('webhighlights');
  identity.className='worktext';
  identity=document.getElementById('contact');
  identity.className='worktext';
  
  identity=document.getElementById(id);
  if(identity != null)
    identity.className=newClass;
}