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>