How to edit button actionscript so it it can be put on to a movieclip button

1

I was using a tutorial from Kirupa (I’m a real beginner by the way) - Complex Button Rollover/Rollout effects http://www.kirupa.com/developer/mx2004/button_effect.htm
and I would like to change the last part of the action script

this.onRelease 								= 								function(){ 								 								getURL("http://www.kirupa.com","_blank");								}

with this button action

on (release) {
    if(_root.currMovie != "collectionsb"){
      _root.currMovie = "collectionsb";
      containerone_mc.loadMovie("collectionsb.swf");
    }else{
      if (containerone_mc._currentframe >= containerone_mc.midframe) {
          containerone_mc.play();
      }
  }
}

so that on release of the movieclip button an external file

collectionsb.swf
will open into a container
containerone_mc

I realise this is probably a very simple problem but I don’t know how to change the code Thanks in advance
I have attached an example if it helps