Photoshop :: Image Window Maximize Over Title Bar And Tools

im working on a PC , with windows 7, with photoshop CS5 i searched everywhere for answer , but none was given.. people did mention this problem, but for different photoshop versions , and, i had it good till i dont know what happened and changed it, so i believe it is fixable but people understood it wrong.
 
anyhow, the problem is, when you try to maximize the image window (assuming you changed it from tabs), the window maximize all over the screen, over the tools and title bar.

instead of staying inside the workspace.as i mentioned, it used to be like it , but something happened and now its all over the thing.i tried double click the hand tool, all sort of things with the "F" and Tab shortcuts, the arrange documents thing on the top, even trying to restore default setting but nothing really did the trick.

i tried to look for something called "Application frame", that somehow suppose to do just that, under window->Application frame, but its not there. again, it used to be ok so i know there is still hope..
 
 here it is restored, under "fit screen" option, notice it only get the hight right, i would not call it "fit screen" but what ever..

red circels show the title bar and tools..

and this is when i hit the maximize button and unleash hell, red circles are where the title bar and tools were, not so nice and cool..

i noticed none of the others gave pictures, so i gave it a go..there are no words to describe how annoying it is.