How can I get my columns to line up in css?

[reddiestorm]

The Left column and center column are lined up, however the right column wants to overrun the left column for some reason. How can I fix this?

My html page is located at:
http://jsweather.fastlink.in/source/html/index.html

and the css at:
http://jsweather.fastlink.in/source/...ages/style.css

Thanks!

[Snookerman]

Which one is the right column? Is it the one that looks just like the left one?