_level problem

programming flash
1

Hi
Friends
I have some problem with _level

I am using this script to load an exteranl movie ( home_page.swf ) in index.swf

layer 1
( 1st frame ):

nextMovie="dummy.swf";
//load the starting movie into level 1
loadMovieNum(nextMovie,1);

Layer 1 ( 2nd frame)

onEnterFrame = function(){
//this makes sure that content 1 isn't already loaded
 if(_root.nextMovie!="home_page.swf"){
 //set the variable that holds the name of the movie to be loaded
 _root.nextMovie="home_page.swf";
 //tell the currently loaded content movie to play it's outro animation
 _level1.gotoAndPlay("outro");
}
}

which works perfectly fine.
in index.swf on layer 10 i am having a movieClip animation but when i load the external movie it over lap the internal movieClip animation.

how can i slove this problem??