BG for the Category like in Here and User Info in the posts

I tried and i can't when i click the print screen the view close

I will try to expalin when u click on a Category and enter the Category forum you see a lot of posts but u don't want to enter them all only want to see if every thing ok inside them (broken links fixed or something like that)

so when your mouse is over the post name like "BG for the Category like in Here and User Info in the posts" this one you will see a the first 4-5 spaces inside the post

like in Windows when your mouse is over the IE you will see what this application for ...

It's the same but in post