[basilrath]

Edit the the calendar.js

and find this.............

var giCellWidth=16; // calendar cell width; if set to -1, it'll be auto-adjusted so as to ensure the width of the entire calendar fits in with the calendar's direct parent tag. NN4 doesn't support -1.
var giCellHeight=16; // calendar cell height;
var giHeadHeight=16; // calendar head row height;
var giWeekWidth=16; // calendar week-number-column width;

Change the 16 to whatever you need ...........and remember to adjust the width and hieght etc