jQuery.fn.blindToggle = function(speed, easing, callback) {
  var h = this.height() + parseInt(this.css('paddingTop')) + parseInt(this.css('paddingBottom'));
  return this.animate({marginTop: parseInt(this.css('marginTop')) < 0 ? 0 : -h}, speed, easing, callback);
};


$(document).ready(function() {   $('#box').blindToggle();  
  var $box = $('#box')
    .wrap('<div id="box-outer"></div>');
  $('#blind').click(function() {
    $box.blindToggle('slow');
  });
});