Tweener

Tweener is an actionscript class library which lets you make all sorts of amazing easing in and out animation effects.

• Tweener Documentation
• Tweener AS3 Tutorial
• Examples (along with source fla)

My sample implemenation

import caurina.transitions.Tweener;



invest_mc.onRollOver = function () {
invest_mc.gotoAndPlay("open");
Tweener.addTween(save_mc, {_x:168.5, time:0.3, transition:"easeInOutExpo"});	
Tweener.addTween(protect_mc, {_x:58.5, time:0.3, transition:"easeInOutExpo"});	
};


invest_mc.onRollOut = function () {
	invest_mc.gotoAndPlay("close");
	Tweener.addTween(save_mc, {_x:376.4, time:0.3, transition:"easeInOutExpo"});	
	Tweener.addTween(protect_mc, {_x:266.5, time:0.3, transition:"easeInOutExpo"});	
}