Help with small code

[dcuellar]

I'm trying to get a rollover effect working for the usernames within "What's Going On?" but I'm having trouble converting the original code from 3.x to 4.0.x. I'm hoping someone is wiling to help me out on this one as there are a few people who would like this.

Here is the code I have:

{vb:stylevar dirmark}<a class="username" href="vb:link member, {vb:raw loggedin}}" onmouseover="ajax_showTooltip('member_ajax.php?$session[sessionurl]u=$loggedin[userid]',this,true);return false">  {vb:raw loggedin.musername}</a>{vb:raw loggedin.invisiblemark}{vb:raw loggedin.buddymark}

So the idea is to show a popup window upon rollover. The area in red (I Think) is the culprit, but I have no idea how it should be.

--------------- Added [DATE]1289756170[/DATE] at [TIME]1289756170[/TIME] ---------------

Any chance that red part can display a template?