$.fn.enableFolding = function(autofold) {
  var fragId = document.location.hash;
  if (fragId && /^#no\d+$/.test(fragId)) {
    fragId = parseInt(fragId.substr(3));
  }

  var count = 1;
  return this.each(function() {
    var t = $(this).text();
    $(this).text("");
    var trigger = $(this).append("<a href='#no" + count + "'></a>").children();
    trigger.text(t);

     trigger.click(function() {
       if (fragId == count) { fragId = 0; return; }
       $(this.parentNode.parentNode).toggleClass("collapsed");
     });
     if ( autofold )
       trigger.click();
    count++;
  }).css("cursor", "pointer");
}