function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

function smoothScroll() {
	// mootools call
	var scrollSection = new Fx.Scroll(window,{duration: 1000, transition: Fx.Transitions.Cubic.easeOut});
	var nav = document.getElementById("navbar");
	var navLinks = nav.getElementsByTagName("a");
	for (var i=0; i < navLinks.length; i++) {
		navLinks[i].onclick = function() {
			var navLink = this.parentNode.className;
			scrollSection.toElement(navLink);
			return false;
		}
	}
}

function internalLinks() { // add scrolling behavior to links with alt="int"
	// mootools call
	var scrollTo = new Fx.Scroll(window,{duration: 1000, transition: Fx.Transitions.Cubic.easeOut});
	var links = document.getElementsByTagName("a");
	for (var i=0; i < links.length; i++) {
		if (links[i].getAttribute("rel") == "scroll") {
			links[i].onclick = function() {
				// getAttribute 2nd param -> IE only to get correct value (else u get absolute path...)
				var linkTarget = this.getAttribute("href", 2).replace("#", "");
				scrollTo.toElement(linkTarget);
				return false;
			}
		}
	}
}

addLoadEvent(smoothScroll);
addLoadEvent(internalLinks);