modal background blur - cross browser

hello,

when it comes to dhtml-based modals (as opposed to actual modal dialog-
windows or popups), an effect seen all over the web is to render the
background content a translucent shade of dark gray. but something i
have only seen in one place is -- blurring the background. that is,
the content area "behind" the modal is not only gray, but uniformly
blurred. like this:

http://semi-suave.com:81/temp/blur.png

....i use this webapp & it works in IE and Firefox. but im not sure
how. below is the .css doc for this app. can anybody tell how its
done?

http://semi-suave.com:81/temp/blur.css


would be happy to provide more info if i can; i use the time writing
web app in the screenshot, but i do not have ownership or admin access
to it.


thanks!
sm

turns out, its a flash-app.. i didnt even notice since the rest of the
app is html-based.

guess that solves that...


sm