I am currently working on a new user profile plugin. for part of the plugin CSS is used to determine the size of a background image. Until yesterday this was working nicely in both chrome and Firefox however when testing other browsers today i have found that it works perfectly in IE9, Chrome, Safari but for some reason does not work in Firefox any more.
The rest of the CSS scrips works perfectly it is just the background image that doesn't display at the correct reduced size and only in Firefox.
I was wondering if anyone has had a similar issue and knows how i can fix it?