java - Wicket: scroll to certain anchor after clicking a link -

i've asked similar question form, need scroll anchor after user clicked link - my solution other thread not work. :(

final link link = new statelesslink("linkid") {   @overrride   public void onclick() {     dosomething();      add(new behavior() {        @override        public void renderhead(component component, iheaderresponse response) {          super.renderhead(component, response);           response.render(new headeritem() {            @override            public iterable<?> getrendertokens() {              return collections.singletonlist("javascript-anchor");            }             @override            public void render(response response) {              response.write("<script type=\"text/javascript\">\n");              response.write("window.location.href='#rules';\n");              response.write("</script>\n");            }          });        }      });      setresponsepage(getclass(), getpageparameters());   } } 

what's wrong approach , how achieve desired scrolling-to-anchor effect?

i'm using following non-javascript code instead:

final link link = new statelesslink("linkid") {   @overrride   public void onclick() {     dosomething();      final string url = requestcycle.get().geturlrenderer().renderfullurl(url.parse(urlfor(getclass(), getpageparameters()))) + "#rules;     setresponsepage(new redirectpage(url));   } }