cooltable

[kushwaha.sumit8]

I am using mediawiki 1.21.2
i downloaded cooltable from http://www.paulgu.com/wiki/Cool_Table and put it inside extensions/
and then in LocalSettings.php i add a line require_once("$IP/extensions/coolTable/coolTable.php");
now the Special:Version shows like
Installed extensions

Other
coolTable (Version 1.1, August 23, 2008) Cool Table Paul Gu
Extension functions
wcooltableExtension
Parser extension tags
<cooltable>, <gallery>, <nowiki> and <pre>

but when i am using cooltable instead of table it shows a single line
"UNIQe4c9e1d5739773c7-cooltable-00000000-QINU"

I am using cooltable as follwing
<cooltable>
<table width="100%"><tr>
<td valign="top" style="color:#e76700;width:33%" >hello</td>
<td valign="top" style="color:#e76700;width:33%" >hello</td>
<td valign="top" style="color:#e76700;width:33%" >'''hello'''</td>
</tr></table>
</cooltable>