JS Error: Navigation links

[virginiacc]

In IE, an error sometimes occurs when the navigation links at the bottom of the main section are clicked. It does not seem to affect user experience.

Stack trace:

TypeError: Unable to get property 'length' of undefined or null reference
   at openSection (http://www.consumerfinance.gov/static/regulations/js/built/regulations.min.js:6:23866)
   at ea.event.dispatch (http://www.consumerfinance.gov/static/regulations/js/built/regulations.min.js:3:24226)
   at q.handle (http://www.consumerfinance.gov/static/regulations/js/built/regulations.min.js:3:20879)

To replicate:

• In IE11, navigate to http://www.consumerfinance.gov/eregulations/1026-38/2016-06834
• Use the navigation links at the bottom of the main section to move back and forth between 1026.38 and 1026.37. The error appears on 1026.37.

[ascott1]

Great catch @virginiacc!