This is a MAC compatible version of the T. King-Remelio Spell Cast Bar UI piece (Briar Version). This mod has a glow effect when the cursor is placed over the crystal at the top of the cast bar. Clicking on the crystal will open your avatar's spell book.
This was verified and tested using Mac OS X.
I take absolutely no credit for any artwork or coding.
The original PC files are no longer linkable via EQInterface. However, an updated version with support of OOM can be found on EQInterface here . The original site and discussion regarding original versions can be found here and the original files can be found here.