Optimizely event for 75% completion of video in PDK player

percent_75.js

$(window).load(function() {
	var isAd = false;
	$pdk.controller.addEventListener("OnMediaStart", function(event) {
  		if(event.data.baseClip.isAd === true) {
			isAd=true;
		} else {
			isAd = false;
			window['optimizely'] = window['optimizely'] || [];
			window.optimizely.push(["trackEvent", "video_start"]);
		}
	}, ["*"]);

	var passed75percent = false;
		$pdk.controller.addEventListener("OnMediaPlaying", function(event) {
		if(!isAd && !passed75percent) {
		    if(event.data.percentCompleteAggregate >= 75) {
		        passed75percent=true;
				window['optimizely'] = window['optimizely'] || [];
				window.optimizely.push(["trackEvent", "percent_complete_75"]);
		    }
		}
	}, ["*"]);
});