function displayBlock(id) {
   info("url: "+window.location);
   var hash = window.location.hash;
   info("hash: "+hash);
   info("displaying block="+id);
   if (hash=="#comments") {
   	info("isHashComments? yes");
   }
  document.getElementById(id).style.display = "block";
}

function displayNone(id) {
  document.getElementById(id).style.display = "none";
}

function showCommentsIfNecessary() {
   info("url: "+window.location);
   var hash = window.location.hash;
   info("hash: "+hash);
   if (hash=="#comments") {
   	displayBlock("expanded-comment-form");
	document.anchors['#comments'].focus();
}
}