Liquid images without upscaling

[Nekom]

I'm working on a simple website that has to be responsive, so far everything is working, but in firefox my images aren't scaling. (While it works in Chrome)I just used this to do that:\[code\]img { max-width: 100% !important; height: auto !important; width: auto !important; display: block !important; float: none !important;}\[/code\]I could use \[code\]height: 100%\[/code\] and \[code\]width: 100%\[/code\] but I don't want images to upscale.This seems fairly simple, why isn't firefox doing it correctly?EDIT: This is an example of the problem http://jsfiddle.net/TC3qq/1/ (I know, tables, but it's an email template)