Elvis Garfield

Hi, I searched this site and other lsl sites and alot of google but i can't find a CLEAR answer/script I am making a hud with offcourse a root prim and alot of buttons linked to it (transparant buttons). What i want is that when i press a button that it light up with a glow/light (or texture?!), so basicly you can see its turned on/pressed/touched...and offcourse going off again... i have no clue about scripting, i can chage scripts if i read somewhere what and how todo it, i saw the Automatic Glow script, but no idea what to change. Not even on Marketplace i can find a script, if it can be done without a script, please enlighten me:) Ty