Скроллинг страницы «Рукой»

$cc.on('mousedown touchstart',function(e){
    if (e.type === "touchstart") {
      var e = e.originalEvent.touches[0] || e.originalEvent.changedTouches[0];
    };
    var strt = e.pageX - $(this).offset().left,
        offset = $layout.offset().left,
        before = width*.5,
        crnt = before;
    $('body').on('mousemove touchmove',function(e){
      if (e.type === "touchmove") {
        var e = e.originalEvent.touches[0] || e.originalEvent.changedTouches[0];
      };
      var current = e.pageX - offset - strt;
      current = Math.min( Math.max(min_d, current), width);
      crnt = current;
      $roller.width(width - current);
      return false;
    });
    $('body').on('mouseup touchend',function(){
      $(this).off('mousemove touchmove');
      $train[0].width(0);
      $train[1].width(0);
      setInterval(function(){
        clearInterval(_timer);
      },200);
    });
    var _timer = setInterval(function(){
      var _train = before-crnt;
      before = crnt;
      if (_train>0) {
        $train[0].width(0);
        $train[1].width(Math.abs(_train));
      } else {
        $train[0].width(Math.abs(_train));
        $train[1].width(0);
      };
    }, 100);
  });