Button tabbing

hey, im trying to set tab index to my buttons in this movie… ive been told that to do this the button text needs to be dynamic or input txt, which works when i tab throught the buttons however when i try to use the mouse on this button, the cursor changes to a ‘text select’ cursor oppose to the little hand… which means i cant select it with the mouse…??

anyone know how to get around this?

cheers.