User Story

https://www.zkoss.org/wiki/ZK_Component_Reference/Essential_Components/Anchornav

Details

1. Please consider maintain the mapping of ZK containers and anchornav in anchornav it self instead of using "ca:data-anchornav-scroll" on targets.
2. Inconsistency API: Find better solution to prevent idspace issue, that is the reason we use "name" attribute but "id" attribute for Anchornav, But other component use "id" e.g. Popup, Button.
3. The JQuery-based selector syntax: in the example, ca:data-anchornav-target="$win1" but the window id="win". Please consider not to use JQuery-based selector or keep it as a fallback solution(do not suggest this usage in document).