I hope this is simple - _global & loadClip question

[COLOR=black]Here’s my question: I have a flash movie with left side navigation. The empty space to the right is a newMovieClipLoader and here is the code:[/COLOR]

 
_global.mainMovie = this;
var empty = this.createEmptyMovieClip("container", "1"); 
empty._x = 203; 
empty._y = 0;
my_mc = new MovieClipLoader();

after this is a pre-loader which works fine so I’m not including all that. The left nav buttons work great. Each click loads the proper movie:

 
my_mc.loadClip("tehome.swf", "container");

The problem is when I’m in a movie and I have a hyperlink in that movie that should load a different page. I created a button and that code is:

 
on (release){
 mainMovie.select1._visible = false;
 mainMovie.select4._visible = true;
 mainMovie.my_mc.loadClip("temenu4.swf", "container");
}

The two items controlling visibility work fine but the clip will not load.
Any suggestions?
I appreciate it.