function txtturnon() {
   var p = document.getElementsByTagName('img');
   for(i=0;i<p.length;i++) {
      p[i].style.display = "none"
   }
   var p = document.getElementsByClassName('hiddenUntilTextVersion');
   for(i=0;i<p.length;i++) {
      p[i].style.display = "block"
   }
   var p = $$('*');
   for(i=0;i<p.length;i++) {
      p[i].style.backgroundImage = "none"
   }
   
}