InfoView - add custom items to toolbar

Hi!

I am trying to add a custom entry to the InfoView Toolbar.

I managed following:

1. added to <Tomcat>/webapps/InfoViewApp/WEB-INF/web.xml following:

    <context-param>
        <param-name>img.toolbar.information</param-name>
        <param-value>toolbar/information.gif</param-value>
    </context-param>

2. added to <Tomcat>/webapps/InfoViewApp/jsp/listing/headerPlus.jsp

    toolbar.beginRightZone();

    // add here
    <fmt:message var="ttInformation" key='main.menu.information.tooltip'/>
    toolbarCtrl.add (newIconWidget("btnInformation",
        "<%= context + SESSION_SCHEMA.getUrl(application, "img.toolbar.information") %>",onBtnInformationClick,
        '<%= Encoder.encodeJS((String)pageContext.findAttribute("ttInformation")) %>',
        '<%= Encoder.encodeJS((String)pageContext.findAttribute("ttInformation")) %>',16,16,0,0,25,3));

    toolbar.add ();     // Separator

and

  function onBtnInformationClick()
    {
        window.open ('http://www.sap.com', 'Sap', config='height=350,width=350, toolbar=no, menubar=no, scrollbars=no, resizable=no,location=no, directories=no, status=no');
    }

3. added to <Tomcat>/webapps/InfoViewApp/WEB-INF/src/com/businessobjects/infoview/ApplicationResources.properties

main.menu.informaton.tooltip=Get more Information

When I now access InfoView, I get the menu and also the shortcut. But the menu is displayed as "???main.menu.information.tooltip???".

Does anybody know, what I forgot?

Thanks, for any help!

ciao Hakan