[flexcoders] Problems with localToGlobal

[Ethan Miller]

Greetings -

I'm using the localToGlobal method but getting impossible 
values returned. My app is 1280 wide but converting an 
object whose local x is 604 is returning a global x of 1535...??

Here's the function in question, the function is called by rolling 
over buttons in an HBox:

private function showTip(text:String, offset:int, event:Object):void {
    var myPoint:Point = new Point(event.currentTarget.x, 
event.currentTarget.y);  
    myPoint = event.currentTarget.localToGlobal(myPoint);
    var myTip:ToolTip = ToolTipManager.createToolTip(
        text, myPoint.x+offset, 
        myPoint.y-32) as ToolTip;
}       

Any help, much appreciated!

cheers, ethan