Menu DropDown Primefaces

Front-end
,
#1

coloquei o menu dropdown do primefaces na minha aplicação mas ele não funciona.
<p:growl autoUpdate=“true”/>

<p:panelMenu style="width:300px">
    <p:submenu label="Ajax Menuitems">
        <p:menuitem value="Save" actionListener="#{menuView.save}" icon="ui-icon-disk" />
        <p:menuitem value="Update" actionListener="#{menuView.update}"  icon="ui-icon-arrowrefresh-1-w" />
    </p:submenu>
    <p:submenu label="Non-Ajax Menuitem">
        <p:menuitem value="Delete" actionListener="#{menuView.delete}"  ajax="false" icon="ui-icon-close"/>
    </p:submenu>
    <p:separator />
    <p:submenu label="Navigations" >
        <p:submenu label="Links" icon="ui-icon-extlink">
            <p:submenu label="PrimeFaces" icon="ui-icon-heart">
                <p:menuitem value="Home" url="http://www.primefaces.org" icon="ui-icon-home" />
                <p:menuitem value="Docs" url="http://www.primefaces.org/documentation" icon="ui-icon-document" />
                <p:menuitem value="Download" url="http://www.primefaces.org/downloads" icon="ui-icon-arrowthick-1-s" />
                <p:menuitem value="Support" url="http://www.primefaces.org/support" icon="ui-icon-wrench" />
            </p:submenu>
        </p:submenu>
        <p:menuitem value="Mobile" outcome="/mobile/index" icon="ui-icon-signal" />
    </p:submenu>
</p:panelMenu>

olha como fica o menu dropdown