Check out http://arshaw.com/fullcalendar for a terrific full calendar implementation.

gistfile1.txt

1. Include the code
<script src="../Scripts/fullcalendar/fullcalendar.js" type="text/javascript"></script>

2. Include a div for your calendar
<div id="cal_viewcalendar"></div>

3. Setup your calendar
$("#cal_viewcalendar").fullCalendar({
    theme: true,
    events: "GetCalendars.aspx",
    cache: true
});

4. Render it!
$("#cal_viewcalendar").fullCalendar("render");