[Lynne]

Actually, you don't </if> right before the <else />, so wouldn't it be something more like this?

<if condition="$foruminfo['forumid'] == 221">
	<img src="images/ocean-navigator/contributing-publishers.gif" />
	<else /> <if condition="$foruminfo['forumid'] == 222">
		<img src="images/ocean-navigator/ocean-navigator.gif" />
		<else /> <if condition="$foruminfo['forumid'] == 223">
			<img src="images/ocean-navigator/good-old-boat.gif" />
			<else /> <if condition="$foruminfo['forumid'] == 224">
				<img src="images/ocean-navigator/practical-sailor.gif" />
				<else /> <if condition="$foruminfo['forumid'] == 225">
					<img src="images/ocean-navigator/cruising-world.gif" />
					<else /> <if condition="$foruminfo['forumid'] == 184">
						<br /><img src="images/ocean-navigator/latts.gif" /><br />
						<else />
						<if condition="!in_array($forum['forumid'], array(221,222,223,,224,225,184))">
							<div id='div-gpt-ad-1337810311805-0' style='width:728px; height:90px;'>
							<script type='text/javascript'>
	googletag.cmd.push(function() { googletag.display('div-gpt-ad-1337810311805-0'); });
							</script></div>
						</if>
					</if>
				</if>
			</if>
		</if>
	</if>
</if>