i'm working on a site using a commercial shopping cart service, and having a bizarrre problem wherein on navigating to a product page, Firefox will lost the https:// in the URL.

i have never noticed a site doing that before and its causing problems with our Web fonts.
Firefox will not load the fonts, thus making the nav looked messed up.

anyone have experience with something like that before?
or know how to fix.

i cannot re-write the URLs because it's part of the CMS which is off limits.