[Help] Link anywhere in product/plugin?

[Stagehandspace]

Ok here it is I have coded a product/plugin and have a location set (navbar) but I also want to allow users to be able to place the link anywhere on their forum:

<plugin active="1" executionorder="5">
		<title>title</title>
		<hookname>global_start</hookname>
		<phpcode><![CDATA[$xxx = '<!--xxx--!></td>'; 
                $vbulletin->templatecache['xxx'] = str_replace($xxx,$xxx.fetch_template('xxx'),$vbulletin->templatecache['navbar']);
		]]></phpcode>
	</plugin>

what can I place in the highlighted part to enable this?