Hi,
Try looking at the ZmDoublePaneView.
js & ZmConvView.
js classes in ZimbraWebClient/WebRoot/
js/zimbraMail/mai/view for examples of how to use DwtSash.
- ZmDoublePaneView creates the sash.
- ZmConvView is a subclass of ZmDoublePaneView and implements the _sashCallback method (defined in ZmDoublePaneView). This callback is registered with DwtSash