问题 joomla1.5搜索组件疑问

<?PHP if($this->countModules('maintext')):?>
<tr valign="top">
        <td class="left">
	        <jdoc:include type="component" />
	</td>
	<?php if($this->countModules('right') ) : ?>
	<td class="right">
		<jdoc:include type="modules" name="right" style="Sunwah"/>
	</td>
	<?php endif; ?>
</tr>
<?php endif; ?>