text: //     Zepto.js
  //     (c) 2010-2012 Thomas Fuchs
  //     Zepto.js may be freely distributed under the MIT license.
  
  ;(function($){
    if ($.os.ios) {
      var gesture = {}, gestureTimeout
  
      function parentIfText(node){
        return 'tagName' in node ? node : node.parentNode
      }
  
      $(document).bind('gesturestart', function(e){
        var now = Date.now(), delta = now - (gesture.last || now)
        gesture.target = parentIfText(e.target)
        gestureTimeout && clearTimeout(gestureTimeout)
        gesture.e1 = e.scale
        gesture.last = now
      }).bind('gesturechange', function(e){
        gesture.e2 = e.scale
      }).bind('gestureend', function(e){
        if (gesture.e2 > 0) {
          Math.abs(gesture.e1 - gesture.e2) != 0 && $(gesture.target).trigger('pinch') &&
            $(gesture.target).trigger('pinch' + (gesture.e1 - gesture.e2 > 0 ? 'In' : 'Out'))
          gesture.e1 = gesture.e2 = gesture.last = 0
        } else if ('last' in gesture) {
          gesture = {}
        }
      })
  
      ;['pinch', 'pinchIn', 'pinchOut'].forEach(function(m){
        $.fn[m] = function(callback){ return this.bind(m, callback) }
      })
    }
  })(Zepto)
  