Flash animations

Hi,I am creating a course in Lectora wherein Flash files are required. ihave created the course structure with several pages. In each page I am embedding a flash file by using the "Add Animation" feature. The swf file contains some buttons and in order to override these buttons I am placing the Lectora buttons on top of it. But somehow the buttons go behind the swf file.Can somebody please suggest how can I get these buttons to come on top of the swf file.