Variable in Javascript In Header

I'm trying to add a simple pop-up window for the member profile page. I've made a good bit of progress, but I'm missing one small element and I'm hoping that the collective brain trust here can help

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What I Did
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Step 1: I added the following code to my postbit:

<a href="JavaScript:PopWindow658827()">$post[username]</a>

Step 2: Then I placed the following code in the headerinclude template:

<script language="JavaScript" type="text/javascript">
      <!--
      function PopWindow658827()
      { 
      window.open('member.php?s=&action=getinfo&userid=$popup', 'popup658827', etc...); 
      }
      //-->
      </script>

Step 3:Lastly, I added the following code mistakenly in my phpinclude template

$popup=$bbuserinfo[userid];

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How Can I Fix It?
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As you can probably tell, the last bit of code actually calls the logged in user's id and not the userid of the post. The original postbit_profile has $ post[userid] for the query. How can I get $ post[userid] in the header?

To say it another way, how can I get this URL to function properly in the header?

<a href="member.php?s=&action=getinfo&userid=$ post[userid]</a>

[mashby]

In the imortal words of Gilda Radner, "nevermind."

Thanks to Razzie on the vBulletin.com forums, I have found my answer [link].