gistfile1.js

if (!Array.prototype.uniq)
{
  Array.prototype.uniq = function(fun)
  {
    var seen = {};
    return this.filter(function (el) {
      var key = typeof (fun) == "function" ? fun(el) : el;
      var r = !seen[key];
      seen[key] = true;
      return r;
    });
  };
}