Scrolling a Flex List control horizontally

<?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" verticalAlign="middle" backgroundColor="white"> <mx:XML id="xmlDP"> <root> <node>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</node> <node>Donec sit amet dui nec pede aliquam auctor.</node> <node>Integer vestibulum sodales dui.</node> <node>Sed nonummy ligula et tortor.</node> <node>Aenean varius neque vel felis.</node> <node>Phasellus venenatis ipsum sit amet nisi.</node> <node>Nullam vitae turpis et ipsum cursus venenatis.</node> <node>Pellentesque tincidunt pede non arcu.</node> <node>Aliquam ut massa quis ante dignissim egestas.</node> <node>Curabitur facilisis velit sit amet metus.</node> <node>Vivamus ornare massa ac massa.</node> <node>Nam accumsan rutrum purus.</node> </root> </mx:XML> <mx:List id="list" dataProvider="{xmlDP.node}" horizontalScrollPolicy="on" verticalScrollPolicy="auto" rowCount="6" width="200" /> </mx:Application>