Full site tutorial

Halo everyone.
I was doing the tutorial full site, and it’s working just fine. Have another question. For example i got my main move, and i have another swf file that loading into my main one. I was trying to load another movie into my second one and nothing happened. Can it be possible done.
Example: Main movie has this

_root.contents.loadMovie(“gallery.swf”);
When gallery loaded I want that another movie will load in to it so i put

_root.gallery.loadMovie(“pic1.swf”);
Here i got problem, nothing happening after that. Can it work or I need to do something else.
I know my english not so good in explanation, sorry for some grammer mistakes.