Bug fixed 2935398: scroll to bottom then click button,  an errorbox should show at the right side of the textbox for ie8.
fix zul
Bug fixed ZK-1124 for ie8: Click away from the menu to close it, you should see a message box showed.
Merge branch 'master' of https://github.com/zkoss/zk into fix-ie8
minor fix
Style fixed: the head-bar should look well when native scrollbar appear
Bug fixed: the first header should have border-left when the header of before head have too much rowspan.
Merge branch 'master' of https://github.com/zkoss/zk into fix-ie8
Merge branch 'master' of https://github.com/zkoss/zk into fix-ie8
Merge branch 'fix-ie8' of https://github.com/huangnoah/zk into fix-ie8
Bug refixed 3306729: the first header should have border-left when the first column is covered with other header
Merge branch 'fix-ie8' of git://github.com/huangnoah/zk
minor fine tune