function initNav() {
	var _menu = document.getElementById('menu');
	if (_menu) {
		var _node = _menu.getElementsByTagName('h2');
		for (var i = 1; i < _node.length+1; i++) {
			var span = document.createElement("span");
			span.innerHTML = '0'+i + ".";
			var _a = _node[i-1].getElementsByTagName('a')[0];
			_node[i-1].insertBefore(span, _a);
		}
	}
}
if (window.addEventListener)
	window.addEventListener("load", initNav, false);
else if (window.attachEvent)
	window.attachEvent("onload", initNav);