I have a checkbox section that users can select to add features. I need each input\'s value to add to a sum to be presented in the #payment-total and #payment-rebill section. Es
Oops! Typo!
Your second span is called payment-rebill not payment-billed. This works
total1 = document.getElementById('payment-rebill');
http://jsfiddle.net/6NJ8e/13/