Javascript Pop Up Windows in XML Gallery?

Hi all,

Ok, I have been trying to get my images (not the thumbnails) in kirupas xml photo gallery to launch a pop up window (with javascript) that displays another swf. The window needs to be centered, 800 x 600, toolbars, etc etc, but I cant get it to work.

I have read alot of posts on this, but nothing seems to work for me to get a pop up window working (I can get the link to work with a _blank window, but I need it to constrain to 800x600 and preferably be centered)

Has anyone got this to work using a javascript pop up window?