Sending a user ID to a script/html as a variable

[Club3G]

Quick question:

I have an applet with a fixed set of input commands loaded in a webtemplates page within vbulletin.

One of the lines is a username parameter, that looks something like:

param'username'='club3g'

It's plain old HTML/Javascript. How would I go about swapping the 'club3g' part of it into a variable for the username, so if Bob opens the page, the page loads with param'username'='Bob'?

Thanks much!

Answer is simply:

$bbuserinfo[username]

If nested in a vB page. Nobody ever answers even my easiest questions. :\