perl / ifram / javascript question

[Madison Kelly]

Hi all,

   I've got a thing I want to do with my web app that I know is possible 
but can't for the life of me figure out... I've googled this do death 
but am probably stumbling over something really simple.

   Anyway, I want to use perl to round a number (for now; later want to 
submit a form without reloading the whole page).

   So I'd like to be able to have a javascript function pass a couple 
variables to a perl script (ie: 
'http://foo.com/cgi-bin/script?num=<real_number>&precision=<precision>'). 
Then, once the perl script does it's magic, load the numbers into hidden 
form fields via an iframe for the calling script to read).

   Hope this makes sense :) Thanks in advance!

Madi
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