Im experiencing some wierd occurances with my actionscript generated tool tips for my buttons on stage...I have checked all of my intervals, and they are all being cleared as necessary, but still the tooltips tend to flicker randomly...this doesnt happen all the time, and I cannot reproduce the bug on demand...does anyone have any suggestions for how I can clean this up?

http://www.expocadvr.com/new/default.html

Thanks in advance...