some trivial javascript code snippets.

utilities.js

function inherit(ThisClass, SuperClass) {
  var Anon = function () {
  };
  Anon.prototype = SuperClass.prototype;
  ThisClass.prototype = new Anon();
  ThisClass.prototype.constructor = ThisClass;
};

function realize(htmlText) {
  var div = document.createElement('div');
  div.innerHTML = htmlText;
  if (div.childNodes.length === 1) {
    return div.childNodes[0];
  }
  else {
    return Array.prototype.slice.call(div.childNodes);
  }
};

function detectMSDIE() {
  var ua = window.navigator.userAgent,
    msie = ua.indexOf('MSIE '),
    trident = ua.indexOf('Trident/');
  return (msie >= 0 || trident >= 0 );
};