// you can override default options globally, so they apply to every .expander() call
$.expander.defaults.slicePoint = 500;

$(document).ready(function() {
  $('div..module_feed .xg_module_body').expander();

  $('div..module_feed .xg_module_body').expander({
  expandEffect: 'fadeIn',
  expandSpeed: 250,
  collapseEffect: 'fadeOut',
  collapseSpeed: 200,
  summaryClass: 'feed-summary',
  detailClass: 'feed-details',
    collapseTimer: 4000,
    beforeExpand: function() {
      $(this).parent().parent().append('<div class="success">before expand.</div>');
    },
    afterExpand: function() {
      $(this).parent().parent().append('<div class="success">after expand.</div>');
    },
    onCollapse: function(byUser) {
      var by = byUser ? 'user' : 'timer';
      $(this).parent().parent().append('<div class="success">on collapse (' + by + ').</div>');
    }
  });
});