Custom Optimizely event when scrolling to bottom of any DOM object

scroll.js

$(document).ready(function(){
(function($){
 
	var timeoutID; 
	var scrolledToTarget = false;
	var $target = $(".your-object");
	var target_bottom = $target.offset().top - $target.outerHeight();
 
	function stopCheck() { 
		timeoutID = null; 
	}
 
	function checkScroll() { 
		var bottom = $(window).height() + $(window).scrollTop(); 

		if (bottom >= target_bottom) { 
			scrolledToTarget = true; 
			stopCheck(); 
			window['optimizely'] = window['optimizely'] || []; 
			window.optimizely.push(["trackEvent", "scroll_target_hit"]); 
		} 
	}
 
	function startTimer() { 
		timeoutID = window.setTimeout(checkScroll, 10000); 
	}
 
	startTimer();
 
})(window.$);
});