I'm guessing this question is just out of interesting as you can just use the one that works but here we go anyway.
The _parent of a mc is either a _root if it is on the stage or a mc if it's inside a movie clip. _parent goes to the level up ie.
_root. - level 0
mc_funny - level 1
|
Mc_inside_mc_funny - level 2
|
Dancing Banna - level 3
Dancing bannas' parent would be Mc_inside_mc_funny because it is going up a level.
_root on the other hand would just go to the top (level 0) ect...
the only flaw that i can see in your code the the space between mvslidemenu and slidemenu
Fixed-
Code:
_root.mvSlideMenu.SlideMenu.mvTopicPortf.gotoAndPlay("Topicin");
good luck, reply back , cheers
blake