Possible To Add A Load Feature In A Movie Clip?

programming flash
1

I have a movie clip that animates when you roll over it located in my main timeline. I would also like this movie clip to LOAD EXTERNAL MOVIE CLIP when it is clicked on. Is this even possible?

I tried loading the animated movie clip into a button and that did not function

Here is the code for the movie clip (which has an instance name of b3)

I was hoping I could just add some code here to load the movie clip which is called 0788_buy.swf

b3.onRollOver = over;
b3.onRollOut = out;

function over() {
this.gotoAndPlay(2);
}

function out() {
this.gotoAndPlay(7);
}

I even tried making an invisible button on its own layer over the movie clip but it overrode the animation of that movie clip