its a function already var bla = function() {} return typeOf(bla) - function, so its not a problem.
I have
var mainTL = new TimelineMax({onComplete:restart}).add(f_728_90_ad, 0);
and it's ok but onComplete return console.log just after start, understand? it's not working properly, I want to know how can I make to call onComplete after whole nested timelines (its about 15 seconds for 728x90px banner)