[flexcoders] horizontalScrollPolicy problems

[michrx7]

If anyone can help with making this work I'd appreciate it. If I have 
canvas' within a canvas I can't get the horizontalScrollPolicy = "on" 
to work properly.

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; 
layout="vertical">

<mx:Script>
        <![CDATA[
                public function changeProp():void {
                        setPol.horizontalScrollPolicy = "on";
                }
        ]]>
</mx:Script>

        <mx:Canvas horizontalScrollPolicy="off" 
verticalScrollPolicy="off" width="200" height="200" 
borderThickness="1" backgroundColor="white">
                <mx:Canvas horizontalScrollPolicy="off" 
verticalScrollPolicy="off" width="190" height="190" 
borderThickness="1">
                        <mx:Canvas id="setPol" 
horizontalScrollPolicy="off" verticalScrollPolicy="off" width="300" 
height="180" borderThickness="1" click="changeProp();">
                                
                        </mx:Canvas>
                </mx:Canvas>
        </mx:Canvas>

</mx:Application>

When I click on the named canvas it seems to turn on a horizontal 
scroll bar, but it's super wide and you can't scroll it? I don't want 
the parent canvas' to have a horizontal scroll. Is there a way to fix 
it?

If I leave the horizontalScrollPolicy on it works fine, but I want it 
off until clicked on.