appointment calendar

I just instaled the appointment calendar plugin for a site and when I look it is too big for the page is there a way to make it smaller. I went through a bunch of plugins to find what will work and this seams to be the best one. Any help would be appreciatied. Here is a link to the page I am having problems with.
http://simplyoxygenonline.com/?page_id=314&preview=true&preview_id=314&preview_nonce=3cafee95ee