wrap html that doesn't need to be loaded on initial load in <div class="deferParsing"><!-- --></div>

deferParsing

$(".deferParsing").each(function(idx, elem) {
    var $elem = $(elem),
      comments = $elem
        .contents()
        .filter(function(){return this.nodeType === 8;})
        .get(0)
      ;
    $elem.replaceWith(comments.nodeValue);
  });