The "Analog clock for Blog-7" may use as gadget for Google Sites too. It is free and easy to install. You can select size of the clock and color of seconds hand. See example on the left.
- Log into your Google Site
- Navigate to the page on which you would like to display the gadget
- Click the Edit Page button
- Select Insert >> More Gadgets...
- Select Add Gadget by URL
- Paste or type the gadget URL (http://www.styleseven.com/analog_clock_for_blog-7/analog_clock_for_blog-7.xml)
- Click Add
- Specify properties of your gadget
- Click OK