markdown indent by header

/*Indent everything under h1,h2,h3 and h4 tags with indent width relative to order of headers.
<h1>ffoooo</h1>
  <p> stuff
  <pre>
  <h2>
    <p> level 2 stuff
    <h3>
      <h4>level 3 stuff
      <p> level 4 stuff.
    <h3>
      <p> back to level 3
<h1>
  <p>all the way back to level 1.
  <h3>
    <p>level 2,even thought the tag is h3
etc...
*/

[1,2,3,4].forEach(function(num){
  var nodeType = 'h' + num;
  $(nodeType).each(function(){
      var $ul = $('<ul class="nobullet">').insertAfter($(this));
      $ul.nextUntil(nodeType).wrapAll('<li>').parent().appendTo($ul);
  });
});