// unobtrusive collapsible menu
// copyright Stephen Chapman http://javascript.about.com
// 17th May 2008
//
// you may use this script on your site provided that
// the copyright notice is retained unaltered.

function toggleMenu(objID) {
if (!document.getElementById) return; 
var ob = document.getElementById(objID).nextSibling; 
ob = ob.style ? ob.style : ob.nextSibling.style; 
ob.display = (ob.display == 'block')?'none': 'block';
} 
var i = 1; 

onload = function(){
while(document.getElementById('menu'+i)) {
document.getElementById('menu'+i).onclick= new Function("toggleMenu('menu"+i+"')"); 
i++;
}}