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(function(DOMParser) {
  "use strict";

  var
    DOMParser_proto = DOMParser.prototype
  , real_parseFromString = DOMParser_proto.parseFromString
  ;

  // Firefox/Opera/IE throw errors on unsupported types
  try {
    // WebKit returns null on unsupported types
    if ((new DOMParser).parseFromString("", "text/html")) {
      // text/html parsing is natively supported
      return;
    }
  } catch (ex) {}

  DOMParser_proto.parseFromString = function(markup, type) {
    if (/^\s*text\/html\s*(?:;|$)/i.test(type)) {
      var
        doc = document.implementation.createHTMLDocument("")
      ;
            if (markup.toLowerCase().indexOf('<!doctype') > -1) {
              doc.documentElement.innerHTML = markup;
            }
            else {
              doc.body.innerHTML = markup;
            }
      return doc;
    } else {
      return real_parseFromString.apply(this, arguments);
    }
  };
}(DOMParser));