In IE6, hflex="min" miscalculate the combobox's width

<zk>
<hlayout height="100%" spacing="0" hflex="min">
<toolbarbutton label="Btn1"/>
<combobox id="fontFamily" mold="rounded" width="125px">
<comboitem label="Calibri" sclass="calibriFont" />
<comboitem label="Courier New" sclass="courierFont" />
<comboitem label="Comic Sans MS" sclass="comicFont" />
<comboitem label="Times New Roman" sclass="timeFont" />
<comboitem label="Century Gothic" sclass="centuryFont" />
<comboitem label="Georgia" sclass="georgiaFont" />
<comboitem label="Impact" sclass="impactFont" />
</combobox>
<combobox id="fontSize" mold="rounded" width="50px">
<comboitem label="8" />
<comboitem label="9" />
<comboitem label="10" />
<comboitem label="11" />
<comboitem label="12" />
<comboitem label="14" />
<comboitem label="16" />
<comboitem label="18" />
<comboitem label="20" />
<comboitem label="22" />
<comboitem label="24" />
<comboitem label="26" />
<comboitem label="28" />
<comboitem label="36" />
<comboitem label="48" />
<comboitem label="72" />
</combobox>
<toolbarbutton label="Btn2"/>
</hlayout>
</zk>