1<?xml version="1.0" encoding="iso-8859-1"?>
2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
3    "http://www.w3.org/TR/xhtml1/DTD/xhtml1.dtd">
4<html xmlns="http://www.w3.org/1999/xhtml">
5<title>[ #516370 ] Invalid ID value?</title>
6<body>
7<h2 id="ValidID1">Test valid D</h2>
8<h2 id="_ValidID2">Test valid ID</h2>
9<h2 id=":ValidID3">Test valid ID - : should only be used for namespaces</h2>
10<h2 id=".InvalidID1">Test invalid ID</h2>
11<h2 id="2InvalidID2">Test invalid ID</h2>
12</body>
13</html>