fix fomat
Merge pull request #145 from chunfuchang/B70-ZK-2468

Bug ZK-2468: Grid with frozen columns rendered incorrectly
Bug ZK-2473: Include with xhtml file type cannot display well
Merge branch 'B70-ZK-2473' of https://github.com/hanhsu/zk
refix B70-ZK-2468: Grid with frozen columns rendered incorrectly