Swapdepths

Hello,

I’m building a website and there is something i cant get done.

Here is what i want, i have a graphic in a mc which grows when you mouseover. thats working. Now i also wants that when you mouseover it, it not only becomes bigger but also appears in top of all the other things. BUT when you mouseout it must be back in its origional layering.
As you can see ive already done some scripting in the bestMC mc.

stop();
this.onEnterFrame = function(){
if(rewind == true){
prevFrame();
}
}
this.onRollOver = function(){
rewind = false;
play();
[COLOR=red]_root.x +=2;
content.bestMC.swapDepths(_root.x);
[/COLOR]}
this.onRollOut = function(){
rewind = true;
}

It is not working, can someone help me please?