function showtext(id) 
  {
	if (eval("document.getElementById('"+id+"').style.display == 'none'") == true) 
	    {
		eval("document.getElementById('"+id+"').style.display = 'block'");
		eval("document.getElementById('"+id+"').style.visibility = 'visible'");
	    } 
	else
	   {
		eval("document.getElementById('"+id+"').style.display = 'none'");
		eval("document.getElementById('"+id+"').style.visibility = 'hidden'");
	   }
   }