Comment 22 for bug 575897

>Did you notice that the problem worked fine in other Linux browsers but not in Firefox?

comment#3 says that just changing the user Agent makes it work.
In case that you don't know what the UA is i will post my current UA:
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0

It's just a name that every browser sends to the webserver. If the behavior of the page changes with a UA change this is a 100% bug in the page that is detecting the user Agent string and does something different depending on the UA string. That means that you can use your "other browser" and change the User Agent of this browser and it should also fail to work.

>The current web standards have flaws which allow for interpretation
Such flaws will be discussed in the standard working groups if such a flaw is found. The standard will be changed based on that discussion.
You can't simple change the browser to make it work because other pages will break with this change.

>Isn't it also important to make a browser compatible to the de facto standards as interpreted by most other browsers?
No, that would bring as back to the IE6 days with a complete broken web.

>Your attitude is what drew me away from Firefox.
I'm just a user like you but I try to tell people the truth.
It seems that most people want to hear the usual marketing speak, full of lies :-(