my IE works as it should.... opens the window with the settings using that function...

my firefox also uses the same settings and opens up a window...

BUT

when the new window is generated, there is a new function resize() which is executed,
that is defined in includes - modules - pages - popup_image - jscript_main.php that resizes the window..

(my ie allows this resize, but my firefox does not)

hope this helps..