[Plugin: IZ-Calender] widen widget?

Hi- love this plugin, it’s working beautifully with my minimatica theme at http://lazystarhorsecompany.com. I just have one small question- is it at all possible to widen the widget calender to 250px? This would make it as wide as the rest of the widgets in my sidebar. It looks a little narrow right now. Thanks!

http://ww.wp.xz.cn/extend/plugins/izcalender/