window.onload = randomizeFeature;

function randomizeFeature(){
	var goop = document.getElementById('primary-feature').id = '';
	var goo = document.getElementById('content-callout').getElementsByTagName('li');
	var x = Math.abs(Math.round(Math.random() * goo.length - 1));

	goo.item(x).id = 'primary-feature';
}