r.js

(function($) {
  $(document).on('mousedown', function mousedown_handler(e) {
    var mousemove_handler = function(e) {
      // 動かしたり
    };

    $(this)
      .on('mousemove', mousemove_handler)
      .on('mouseup', function mouseup_handler(e) {
        $(this)
          .off('mousemove', mousemove_handler)
          .off('mouseup', mouseup_handler);
      });
  });
})(jQuery);