[FX.php List] Visual cue when processing a long, multi-record edit request?

[Joel Shapiro]

Hi all

I've got a page that allows users to edit many related records all at  
once (via radio buttons).  Unfortunately, the browser stays on the  
editable page -- sometimes for up to 30 seconds -- after clicking  
submit.  I'm wondering if there's some way I can display some kind of  
"processing..." message or animated gif after submitting, instead of  
leaving the user staring at the page he/she just submitted (and  
wondering if anything is happening).

Or is there a way to have the browser switch to the processing page  
right away, and I could put my message/gif on that page?

(I already have a note next to the Submit button.  I know I could  
have a javascript alert pop-up, but I'd rather users not have to  
click OK again after clicking 'Submit'.... Maybe even something like  
a javascript pop-up window that then closes upon completion??)

I know this isn't specifically FX.php, but I'm hoping someone might  
have a suggestion.

TIA

-Joel