polyfill.js

//     Zepto.js
//     (c) 2010, 2011 Thomas Fuchs
//     Zepto.js may be freely distributed under the MIT license.

(function(undefined){
  if (String.prototype.trim === undefined) // fix for iOS 3.2
    String.prototype.trim = function(){ return this.replace(/^\s+/, '').replace(/\s+$/, '') };

  // For iOS 3.x
  // from https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/reduce
  if (Array.prototype.reduce === undefined)
    Array.prototype.reduce = function(fun){
      if(this === void 0 || this === null) throw new TypeError();
      var t = Object(this), len = t.length >>> 0, k = 0, accumulator;
      if(typeof fun != 'function') throw new TypeError();
      if(len == 0 && arguments.length == 1) throw new TypeError();

      if(arguments.length >= 2)
       accumulator = arguments[1];
      else
        do{
          if(k in t){
            accumulator = t[k++];
            break;
          }
          if(++k >= len) throw new TypeError();
        } while (true);

      while (k < len){
        if(k in t) accumulator = fun.call(undefined, accumulator, t[k], k, t);
        k++;
      }
      return accumulator;
    };

})();