large numbers get rewritten to scientific notation

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Use a large z-index (inexperienced or sloppy CSS coders will do that), like 
"z-index:10000000000000000;"
2. Pull through mod_pagespeed.

What is the expected output? What do you see instead?

Output: 
"z-index: 1e+16;"
Expected output:
"z-index:10000000000000000;"

What version of the product are you using (please check X-Mod-Pagespeed
header)?
Don't know, no X-Mod-Pagespeed header

On what operating system?
Ubuntu

Which version of Apache?
2.2.16

Which MPM?
No idea what this is, sorry :-)

URL of broken page:
http://flow.proquest.com/public/css/I.library.css+collaboration.css+oz,,_library
.css+biblio.css+oz,,_frame-app.css,Mcc.Ge-J1ldCoY.css.pagespeed.cf.rYKo0GSKba.cs
s

Original issue reported on code.google.com by [email protected] on 28 Sep 2012 at 9:28