OK.. I am new at this but I call UNCLE!

I have two web forms using a popup jsCalendar date selector.

Both are coded exactly the same BUT one displays the calendar in the correct format (table display approx 2" wide) and the second one blows the columns up to about 3x the normal size, making the entire display about 8" wide....?

The ONLY difference between the two is that one is within a table so I tried placing the other one within a table to see if that made a difference...  but no difference.

They're extremely simple calendars, no special dates, etc.. just out-of-the box stuff...

Does any one have any ideas what could be causing this variance???  More importantly, how can I FIX it?