A empty listbox with long header will appear scroll bar (IE only)

<div width="300px">
		<listbox>
			<listhead>
				<listheader label="col 1" width="150px" />
				<listheader label="col 2" width="150px" />
				<listheader label="col 3" width="100px" />
			</listhead>
		</listbox>
		<listbox>
			<listhead>
				<listheader label="col 1" width="150px" />
				<listheader label="col 2" width="150px" />
				<listheader label="col 3" width="100px" />
			</listhead>
			<listitem>
				<listcell label="item"/>
				<listcell label="item"/>
				<listcell label="item"/>
			</listitem>
		</listbox>
	</div>