Bug Fixed B70-ZK-2130: Frozen Tree - columns flicker and width changes when resizing the browser http://tracker.zkoss.org/browse/ZK-2130
Merge remote-tracking branch 'upstream/6.5'
Merge remote-tracking branch 'upstream/6.5'
B70-ZK-2128: Frozen Tree - cells disappearing after replacing the columns twice http://tracker.zkoss.org/browse/ZK-2128