Here, the CSS3 pseudo-class :target to change the window stacking order, so the active window is the topmost window. Try clicking on one of the three first icons below, and if your browser supports
:target, the appropriate window should light up.
I've made added a few lines of script that should enable you to drag the windows around to your own liking.
Since the windows are transparent, the performance is rather abysmal on slower computers, but I'm keeping it this way, since I just wanted to show that “it can be done”.
There have been several sources of inspirations for this little experiment:
If you wish to use the techniques on this page for whatever reason, you are free to do so without asking.