Java Development Tools

Hi,
I am using jdev version 11.1.1.6.0.
I have iframe in that i have given source as a url of page. On that page load of iframe page i want to navigate the parent page of iframe to the other page i.e. replace original parent page.
how can I acheive that.

When generally I use following method it redirects to that page.
with url like /faces/oracle/webcenter/portalapp/pages/common/temp.jspx

    public void navigateToUrl(String url) {
        //Redirect to Page with givn url string      
        FacesContext fctx = FacesContext.getCurrentInstance();
        ViewHandler vh = fctx.getApplication().getViewHandler();
        UIViewRoot viewToRender = vh.createView(fctx, url);
        fctx.setViewRoot(viewToRender);
        fctx.renderResponse();
    }

but in the page load of fragment page its not redirecting parent page or page in the fragment also .
So what is work around to naviagate parent pages.

Any help is appriciated.