function tricker(a)
{
   var e=document.getElementById(a);
   var x=document.getElementById('short_text');
   if(!e)return true;
   if(e.style.display=="none")
   {
      e.style.display="block";
      x.style.display="none";
   }
   else
   {
      e.style.display="none";
      x.style.display="block";
   }
   return true;
}