code: function(element) {
    if ('outerHTML' in element) return element.outerHTML;
    var ns = "http://www.w3.org/1999/xhtml";
    var container = document.createElementNS(ns, '_');
    var elemProto = (window.HTMLElement || window.Element).prototype;
    var xmlSerializer = new XMLSerializer();
    var html;
    if (document.xmlVersion) {
      return xmlSerializer.serializeToString(element);
    } else {
      container.appendChild(element.cloneNode(false));
      html = container.innerHTML.replace('><', '>' + element.innerHTML + '<');
      container.innerHTML = '';
      return html;
    }
  }
docs: https://gist.github.com/1044128/