Hi Karun, the month view is not really meant to be displayed at 100x100, so we don't have any scroll technology built-in to the gwt-cal library.
However, I believe you could implement scrolling outside of gwt-cal itself. For example, you could set a min-width / height on the page to enforce page scrolling (this is what Google Calendar does), or your could put the Calendar inside a ScrollView, and set a minimum height for the calendar. That way, if the Calendar (child) exceeds the bounds of the ScrollView (parent), scroll bars will be displayed.
I recommend you play around with Google Calendar to see what they do. They have a solution, and it seems to be at the page-level, as opposed to being implemented in their calendar widget.