Age Restriction Button – Trigger event through onClick function of button

I need to add the following to the not of age/leave button of the age gate popup.

try{
__adroll.record_user({“adroll_segments”: “7bede01b”})
} catch(err) {}

Here are the instructions I was given:

The event pixel should be triggered through the onClick function of the button on the page(s) where the event occurs. As an option, many of our advertisers place the script in an external JavaScript file that gets called during the click event.

The page I need help with: [log in to see the link]