Something

import com.stevensacks.utils.ObservableClass;
import com.stevensacks.galapagos.pages.PageModel;
import mx.utils.Delegate;

class com.stevensacks.galapagos.pages.Page extends OberservableClass
{
	private var page:MovieClip;	
	private var model:PageModel;
	private var progressInterval:Number;
	
	function Page(pm:PageModel)
	{
		super();
		model = pm;
		page = model.clip;
	}
	public function transitionIn():Void
	{
		if (page.transitionIn) {
			page.transitionIn();
		} else {
			page.gotoAndPlay("transitionIn");
		}
	}
	public function transitionOut():Void
	{
		if (page.transitionOut) {
			page.transitionOut();
		} else {
			page.gotoAndPlay("transitionOut");
		}
	}
	// called by page
	private function transitionInComplete():Void
	{
		dispatchEvent({type:"transitionInComplete"});
	}
	private function transitionOutComplete():Void
	{
		dispatchEvent({type:"transitionOutComplete"});
	}
	// inject functions and properties into page clip
	private function inject():Void
	{
		page.transitionInComplete = Delegate.create(this, transitionInComplete);
		page.transitionOutComplete = Delegate.create(this, transitionOutComplete);
		page.assets = model.assets;
		page.props = model.props;
	}
}