Problem with Loading External jpeg into swf?!?

i created a movie clip called “call” which has a black rectangle, in a movie clip(25th frame). and i gave the frame a stop action.
then from the behaviour panel i told “call” to load external jpeg by that script:

on (release) {
//load Graphic Behavior
this.loadMovie(“2.jpg”);
//End Behavior
}

so the button that i previously created would going to play “call” and that will load the external file.
the button stops at frame 25 with the black rectangle . but it loads the jpeg when i click on it twice…?!