I have 4 links that each open 4 separate DOMWindows. Each DOMWindow has a close window link inside. If you open each DOMWindow, one at a time, clicking "Close Window" on each before opening the next one, everything works fine.

However, I'm having this problem:

If I click the first link for the first DOMWindow it appears fine.
If I click the second link for the second DOMWindow (without clicking close window on the first window) the second DOMWindow shows the content for BOTH DOMWindows inside.
If I click the third link in the same manner as the second, it shows the content for THREE domwindows.

What can I do to fix this?