AS2 tweening

I have a small flash file with slide out side panels. I need to be able to click on the left one and have it slide out, but also make sure the right one is slid back in place. I think the code I'm currently using is pretty close if anyone can help me tweak it.

Thanks

Code:

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import mx.transitions.*;
import mx.transitions.easing.*;

this.attachMovie("leftBrain","leftBrain",1);
leftBrain._x = -209.8;
leftBrain._y = 149.8;
leftBrain._alpha = 100;

this.attachMovie("rightBrain","rightBrain",2);
rightBrain._x = 914.7;
rightBrain._y = 141.6;
rightBrain ._alpha = 100;


this.leftBrain.leftBtn.onRelease = function():Void  {
        slideFromLeft(leftBrain,71.2,149.8,2);
};

this.rightBrain.rightBtn.onRelease = function():Void  {
        slideFromRight(rightBrain,633.5,141.6,2);
};

// function to move movies
slideFromLeft = function (theMC:MovieClip, xVal:Number, yVal:Number, tweenSpeed):Void {
        // get original values
        startX = theMC._x;
        startY = theMC._y;
        // tween to center
        moveXtween = new Tween(theMC, "_x", Strong.easeOut, theMC._x, xVal, tweenSpeed, true);
        moveYtween = new Tween(theMC, "_y", Strong.easeOut, theMC._y, yVal, tweenSpeed, true);
        // move old mc home
        moveXtween = new Tween(_global.theOldMC, "_x", Strong.easeOut, _global.theOldMC._x, _global.theOldMC.xVal, tweenSpeed, true);
        moveYtween = new Tween(_global.theOldMC, "_y", Strong.easeOut, _global.theOldMC._y, _global.theOldMC.yVal, tweenSpeed, true);
        _global.theOldMC = theMC;
        _global.theOldMC.xVal = startX;
        _global.theOldMC.yVal = startY;
};
stop();

slideFromRight = function (theMC2:MovieClip, xVal:Number, yVal:Number, tweenSpeed):Void {
        // get original values
        startX = theMC2._x;
        startY = theMC2._y;
        // tween to center
        moveXtween = new Tween(theMC2, "_x", Strong.easeOut, theMC2._x, xVal, tweenSpeed, true);
        moveYtween = new Tween(theMC2, "_y", Strong.easeOut, theMC2._y, yVal, tweenSpeed, true);
        // move old mc home
        moveXtween = new Tween(_global.theOldMC2, "_x", Strong.easeOut, _global.theOldMC2._x, _global.theOldMC2.xVal, tweenSpeed, true);
        moveYtween = new Tween(_global.theOldMC2, "_y", Strong.easeOut, _global.theOldMC2._y, _global.theOldMC2.yVal, tweenSpeed, true);
        _global.theOldMC2 = theMC2;
        _global.theOldMC2.xVal = startX;
        _global.theOldMC2.yVal = startY;
};
stop();

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