var btn = $('#item');

var downs = btn.asEventStream('mousedown');

var ups = $(document).asEventStream('mouseup').map('clicks');

var clickOrHold = downs.flatMapLatest(function() {

  return Bacon.later(1000, 'hold').merge(ups).take(1);

});

​

var dragging = clickOrHold.filter(function(val) {return val == 'hold';} )

  .merge(ups.map(false))

  .toProperty(false);

​

$(document).asEventStream('mousemove').filter(dragging).onValue(function(mmove) {

  mmove.preventDefault();

  btn.offset({left: mmove.clientX, top: mmove.clientY});

});

​

clickOrHold.onValue($('#result'), 'append');

​

​