modify zkbind test cases.
Bug fixed B65-ZK-1735: Tree overlaps parent container, after update
http://tracker.zkoss.org/browse/ZK-1735
Merge pull request #22 from paowang/master

Fix URL path issue of zkbind test case.
Bug fixed B65-ZK-1737: Typo in some zk.fmt.Number functions: varStr
(wrong) vs valStr (right)  http://tracker.zkoss.org/browse/ZK-1737
Merge branch 'B65-ZK-1735' of git://github.com/huangnoah/zk
Merge branch 'B65-ZK-1737' of git://github.com/huangnoah/zk
Fix side effect of bug ZK-1718