[Vlasenko Fedor]

if (!Array.prototype.map) {
    Array.prototype.map = function (fn, scope) {
      var tmp = [];
      for (var i = 0, len = this.length; i < len; ++i) {
        tmp.push(fn.call(scope, this[i], i, this));
      }
      return tmp;
    }
  }
  var arr = [1, 2, 3];
  var arr1 = ["a", "b", "c"];
  var mas = arr1.map.call(arr, function (el) {
    return el;
  });
  alert(mas);

  var sas = arr.map(function (el) {
    return ++el;
  });

  alert(sas);