$(function() {
  function setCropMarks(c) {
    $('#crop_x').val(c.x);
    $('#crop_y').val(c.y);
    $('#crop_w').val(c.w);
    $('#crop_h').val(c.h);
  }
  $.globalEval('var cropSettings = '+$('#crop_settings').val())
  $('.crop img').Jcrop({
    setSelect: cropSettings,
    onChange: setCropMarks,
    onSelect: setCropMarks
  });
});