code: function Plugin(option) {
      return this.each(function () {
        var $this = $(this);
        var options = typeof option == 'object' && option;
  
        if (this == window || this == document || $this.is('body')) {
          Parallax.configure(options);
        }
        else if (!$this.data('px.parallax')) {
          options = $.extend({}, $this.data(), options);
          $this.data('px.parallax', new Parallax(this, options));
        }
        else if (typeof option == 'object')
        {
          $.extend($this.data('px.parallax'), options);
        }
        if (typeof option == 'string') {
          if(option == 'destroy'){
              Parallax.destroy(this);
          }else{
            Parallax[option]();
          }
        }
      });
    }
docs: Parallax Plugin Definition