var isIE = (navigator.appName == 'Microsoft Internet Explorer');
if (isIE) { document.execCommand("BackgroundImageCache",false,true); };

var oldTab = 1;
function selectTab(id)
{
  if (oldTab != 0 ) {
  obj = document.getElementById('content' + oldTab);
  obj.style.display = 'none';

  obj = document.getElementById('cTab' + oldTab);
  obj.className = 'ThumbImage';

 };

 obj = document.getElementById('content' + id);
 obj.style.display = 'block';

 obj = document.getElementById('cTab' + id);
 obj.className = 'ThumbSel';

 oldTab = id;
};

function hideIntroText(id)
{
  obj = document.getElementById(id);
  obj.style.display = 'none';
}