$(document).ready(function() {
  $('div.demo-show > div').hide();
   var hrefParts = location.href.split('=');
    var thisPage = hrefParts[hrefParts.length-1];
  $('div.demo-show div:has(a[href$=' + thisPage + '])').show();

  $('div.demo-show > h4,h5').click(function() {
    $(this).next('div').slideDown('fast')
    .siblings('div:visible').slideUp('fast');
  });
});