Based on Novawolf Horizontal Spellbar (9 slots) http://www.eqinterface.com/downloads/fileinfo.php?s=&id=3731 by marcin, which was based on http://www.eqinterface.com/downloads/fileinfo.php?id=754 by Novawulf.

This has been updated and modified for slot 10,11 and 12
I can't test as i dont have a char with those AA's
Let me know if any problems

Also modified size to fit my ui, Width 1680 and height increasd to fit 3 lines of text for spell name.

Credits to original authors for code

Wolf

Edit.
Added original size spell bar with extra slots as per request
Note: Long spell names will be cut short.

Again i can't test, so let me know if extra slots dont look right, add screenshot if you can