$(document).ready(function(){
  
  $('.expandable').live( 'click', function(event) {
    var ID = this.id;
    ID = ID.substring(6, ID.length);
    $('#menu_' + ID).toggle(200);
    $(this).children('span').toggleClass('menu_arrow_270');
    $(this).children('span').toggleClass('menu_arrow');
    
	
	
	var _gaq = _gaq || [];
  _gaq.push(['_setAccount', 'UA-27446963-1']);
  _gaq.push(['_trackPageview']);
  
	var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
  });

});