brad.laboon.io/js/navbar.js

(function()
{
	// Highlight the current page in the navbar
	var highlightLink = function()
	{
		var links = document.getElementsByClassName("sidelink");
		for (var i = 0; i < links.length; i++) {
			if (links[i].href == location)
				links[i].className += " sidelink-active";
		}
	}
	
	// Attach onload handler
	if (window.addEventListener)
		window.addEventListener("load", highlightLink, false);
	else if (window.attachEvent)
		window.attachEvent("onload", highlightLink);
})();