Steps to Reproduce

1. run zkcal-114.zul
2. wait for a moment, check developer tool > console Tab

Current Result

a js error:
Uncaught RangeError: Invalid array length
at Array.push (<anonymous>)
at init.drawItem_ (calendar.wpd:245:9)
at init._resetDayPosition (calendar.wpd:3043:12)
at init._rePositionDay (calendar.wpd:3078:8)
at init.bind_ (calendar.wpd:2903:8)
at init.bindChildren_ (zk.wpd:24955:67)
at init.bind_ (zk.wpd:24915:12)
at init.bind (zk.wpd:24832:14)
at init.replaceChildHTML_ (zk.wpd:24539:13)
at init.replaceHTML (zk.wpd:24364:16)

Expected Result

no error

Debug Information

• the item's lowerBoundEd is wrong