function initPage() {

	initAutoScalingNav({

		menuId: "nav",

		sideClasses: true,

		liHovering: true,

		spacing: 1

	});

}

function initAutoScalingNav(o) {

	if (!o.menuId) o.menuId = "nav";

	if (!o.tag) o.tag = "a";

	if (!o.spacing) o.spacing = 0;

	if (!o.constant) o.constant = 0;

	if (!o.minPaddings) o.minPaddings = 0;

	if (!o.liHovering) o.liHovering = false;

	if (!o.sideClasses) o.sideClasses = false;

	if (!o.equalLinks) o.equalLinks = false;

	if (!o.flexible) o.flexible = false;

	var nav = document.getElementById(o.menuId);

	if(nav) {

		nav.className += " scaling-active";

		var lis = nav.getElementsByTagName("li");

		var asFl = [];

		var lisFl = [];

		var width = 0;

		for (var i=0, j=0; i<lis.length; i++) {

			if(lis[i].parentNode == nav) {

				var t = lis[i].getElementsByTagName(o.tag).item(0);

				asFl.push(t);

				asFl[j++].width = t.offsetWidth;

				lisFl.push(lis[i]);

				if(width < t.offsetWidth) width = t.offsetWidth;

			}

			if(o.liHovering) {

				lis[i].onmouseover = function() {

					this.className += " hover";

				}

				lis[i].onmouseout = function() {

					this.className = this.className.replace("hover", "");

				}

			}

		}

		var menuWidth = nav.clientWidth - asFl.length*o.spacing - o.constant;

		if(o.equalLinks && width * asFl.length < menuWidth) {

			for (var i=0; i<asFl.length; i++) {

				asFl[i].width = width;

			}

		}

		width = getItemsWidth(asFl);

		if(width < menuWidth) {

			var version = navigator.userAgent.toLowerCase();

			for (var i=0; getItemsWidth(asFl) < menuWidth; i++) {

				asFl[i].width++;

				if(!o.flexible) {

					asFl[i].style.width = asFl[i].width + "px";

				}

				if(i >= asFl.length-1) i=-1;

			}

			if(o.flexible) {

				for (var i=0; i<asFl.length; i++) {

					width = (asFl[i].width - o.spacing - o.constant/asFl.length)/menuWidth*100;

					if(i != asFl.length-1) {

						lisFl[i].style.width = width + "%";

					}

					else {

						if(navigator.appName.indexOf("Microsoft Internet Explorer") == -1 || version.indexOf("msie 8") != -1 || version.indexOf("msie 9") != -1)

							lisFl[i].style.width = width + "%";

					}

				}

			}

		}

		else if(o.minPaddings > 0) {

			for (var i=0; i<asFl.length; i++) {

				asFl[i].style.paddingLeft = o.minPaddings + "px";

				asFl[i].style.paddingRight = o.minPaddings + "px";

			}

		}

		if(o.sideClasses) {

			lisFl[0].className += " first-child";

			lisFl[0].getElementsByTagName(o.tag).item(0).className += " first-child-a";

			lisFl[lisFl.length-1].className += " last-child";

			lisFl[lisFl.length-1].getElementsByTagName(o.tag).item(0).className += " last-child-a";

		}

		nav.className += " scaling-ready";

	}

	function getItemsWidth(a) {

		var w = 0;

		for(var q=0; q<a.length; q++) {

			w += a[q].width;

		}

		return w;

	}

}

if (window.addEventListener)

	window.addEventListener("load", initPage, false);

else if (window.attachEvent)

	window.attachEvent("onload", initPage);