Window A under control of Window B?

How the heck can I do this?

[mivox]

OK... I want to have a little window (we'll call it HelpWindow) that pops up when you click on a help link in a store window (we'll call it StoreWindow)... that part is easy.

Once HelpWindow pops up (a small window that leaves StoreWindow visible below), customers can go through a 'decision making' questionaire that would end with product recommendations for their specific needs... Ideally, the last stage in the HelpWindow process would show a list of links that would cause StoreWindow to display the recommended products.

So is there any way that a link in HelpWindow could cause a specific page to be displayed in its "parent" StoreWindow (like the "target" specification in frames)? Javascript? Perl? I can think of a way to do it with frames (with the "click here to close HelpFrame" link to make them go away), but I can't help but think the separate pop-up HelpWindow is a bit more elegant... if it's possible.

[rcjordan]

I'm almost positive I've seen this done using javascript.

[Drastic]

Try this [google.com] or this [google.com]. (If you haven't already figured it out.)

Had to link to google's cache, the site isn't responding at the moment.

[mivox]

Got 'em both bookmarked! Thanks for the lead... :)