Blogger Time Tracking

[sonex293]

I'm wanting to use blogger.com to track my project build, but I'm a blogging newbie. I'd like to be able to put time worked in each blog posting and have a "gadget" sum the time and put a total at the top of the blog, maybe on a sidebar. Has anyone done this and can you point me to the correct "gadget" for doing this?

Here's an example, I can't figure out how it's done...

http://rv9project.blogspot.com/

Thanks!

--
Michael