Loading with transitions

Hi all, I have a wee problem which I’m hoping someone can help me with. I’ve just got to grips with the ‘loading external swf files with transition’ and I’m looking for a way to adapt it. Essentially I have a three button nav but only one of the three buttons needs to call in an external swf. How do I change the code so that when button 1 & 2 are pressed no external swf loads but the container still does its thing and plays the ‘out’ part of section 3?