Build a Thermometer Controlled Page with jQuery | Build Internet!
http://buildinternet.com/2009/10/build-a-thermometer-controlled-page-with-jquery/

Hold on. Before anyone gets too excited, jQuery does not have the ability to actually monitor a room’s temperature. The thermometer we are building is a vertical slider from the jQuery UI library. As the temperature is changed on the thermometer, the page design will update accordingly. The choice to go green in today’s post wasn’t random. Actually, it’s the result of an annual one day movement in the blogosphere…