I have updated the script to its final version 2.72 which can be downloaded from the version list here. The version is currently unapproved by Mozilla staff so will have to downloaded manually. Once it gets approved, users with old versions of script will be able to see the browser prompt to update the script.
Release notes :
Modified the script to go along with recent forum changes
* Ad-block is working again
* The translator icon does not overlap the text anymore
* mark my replied thread is working again (it highlights the thread you have responded in past)
* Forum width 100%
Thanks for the support
Edit : If for some reason the version 2.72 is not showing in the version list for anonymous users, please wait until it shows up (Mozilla has some time restrictions too).
Yeah its just JS, but in order to get it working on browsers other than firefox you will have to find the replacement of some firefox only supported functions I have used in the script. That too is not very hard .