Help::Loading swf file in Action Script!

I have created two swfs called intro.swf and buttons.swf.
in my intro.fla after showing some intorduction i used [loadMovie(“buttons.swf”, _root);]
to load the buttons.swf where i can show the buttons. the i saved the fla files and published them in to swfs. if i open the intor.swf on my desktop it is running smoothly.
Then i embeded the intor.swf in my html page using dreamweaver.
**The Problem **is when i open my html page, the buttons part is not displaying.
why it is so?
can any one help me pls?
Thank you