It looks like the link pointing here was faulty. Maybe try searching?
function sendEvent(action, element) {
var videoTitle = $(element).data('title');
if (dataLayer && videoTitle) {
dataLayer.push({
'event': 'gtm.custom_event',
'eventInfo': {
'category': 'Video',
'action': action,
'label': element,
'value': 0,
'nonInteraction': false
}
});
}
}