Mac OS X: Retreiving contents of a text box from Firefox's cache

Retreiving contents of a text box from Firefox's cache

Hi everyone,

I have a rather urgent problem. I was editing some content in an online publisher (Movable Type), and one of the many bugs of the software is that it sometimes logs you out when you're making changes. This happened, and I logged back in and the HTML Textile 2 document I was working on disappeared -- except for the first three or four words, which in a several-thousand word document is not helpful. (Also, there's no revision history tool available, sadly.)

The original is on someone else's computer that is in the shop, or something; regardless, the original is not available. Is there some way of accessing my browser's cache and retrieving the contents of that text box? If it's in code, that's fine (the original text was light HTML anyway); there are people who have Dreamweaver at my work. And I've also pinpointed the precise history item where the original text appeared. It's a cgi-bin page, though, so if I enter the address it just prompts me to log in and takes me to the current entry, which is the corrupt/incomplete one.

I was using Firefox 3.5.3 in OS X 10.6.1.

Thanks! Much appreciated, everyone.

P.S. Apologies if this isn't the correct forum.