I am looking Regular Expression to check
String is Valid XHTML or not
example
<h2>Legal HTML Entity References</h2>
<table align="center" border="0" cellspacing="0" cellpadding="2">
<tr>
<th align="left" width="145" valign="top" height="40">hi this is header
</th>
</tr>
<tr>
<td>hello
<td>
</tr>
</table>