gistfile1.js

  if(!Array.prototype.unique) {
    Object.defineProperty(Array.prototype, "unique", {
      value: function(key) {
        var o = {}, i, l = this.length, r = []
        for(i=0; i<l;i+=1) {
          if(key) {
            var _key = ""
            ,self = this
            if(typeof key == "string") {
              _key = key
            } else if(typeof key == "function") {
              _key = key(self[i])
            } else {
              key.forEach(function(e) {
                _key += self[i][e]
              })
            }
            o[_key] = this[i]
          } else {
            o[this[i]] = this[i]
          }
        }
        for(i in o) {
          r.push(o[i])
        }
      return r
      }
      ,writable: false
      ,enumerable: false
      ,configurable: false
    })
  }