See an example

You may insert a calendar created with Google Calendar into an EditArea block.

• Go to www.google.com/calendar 
• If you already have a Google account, just log in. Otherwise you can create a free account by clicking on "Create an account now"
• Once you've logged in, a calendar will be available
• On the left side, choose the calendar you want and click on "Manage calendars"
• click on the name of the calendar
• Under "Private Address" click on the blue "HTML" button
• In the popup window, click on "configuration tool"
• On the left side, modify the settings for your calendar  (size, etc.)
• Click on the "Update HTML" button
• Copy the shown code

Switch to your EditArea site, then

1. select the block in the page you want the calendar to be shown
2. go to the "body" entry 
3. click on 
4. paste the previously copied code
5. click on OK