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

function turnTabOne() {
	 if (YAHOO.util.Dom.getElementsByClassName( 'tabOff', 'a', 'tailor_made_tab') == false) {
		var offTabTwo = YAHOO.util.Dom.getElementsByClassName( 'tabOn', 'a', 'tailor_made_tab');
		offTabTwo[0].className = "tabOff";
		var onTabTwo = YAHOO.util.Dom.getElementsByClassName( 'tabOff', 'a', 'scheduled_tab');
		onTabTwo[0].className = "tabOn";
		return false;
	}
	else  if (YAHOO.util.Dom.getElementsByClassName( 'tabOff', 'a', 'scheduled_tab') == false) {
		var offTabOne = YAHOO.util.Dom.getElementsByClassName( 'tabOff', 'a', 'tailor_made_tab');
		offTabOne[0].className = "tabOn";
		var onTabOne = YAHOO.util.Dom.getElementsByClassName( 'tabOn', 'a', 'scheduled_tab');
		onTabOne[0].className = "tabOff";
		return false;
	}
	else {
		return false;
	}
}


function showSection(id) {
	var uls = document.getElementsByTagName("UL");
	for (var i=0; i<uls.length; i++ ) {
		if (uls[i].className.indexOf("section") == -1) continue;
		if (uls[i].getAttribute("id") != id) {
			uls[i].style.display = "none";
		} else {
			uls[i].style.display = "block";
		}
 	}
}

function prepareTabbednav() {
	if (!document.getElementsByTagName) return false;
	if (!document.getElementById) return false;
	if (!document.getElementById("tabbed_nav")) return false;
	var nav = document.getElementById("tabbed_nav");
	var links = nav.getElementsByTagName("a");
	for (var i=0; i<links.length; i++ ) {
		var sectionId = links[i].getAttribute("href").split("#")[1];
		if (!document.getElementById(sectionId)) continue;
		document.getElementById("scheduled").style.display = "none";
		links[i].destination = sectionId;
		links[i].onclick = function() {
			if (YAHOO.util.Dom.hasClass(this, 'tabOff')) {
			showSection(this.destination);
			turnTabOne();
			}
			return false;
		}
	}
}

addLoadEvent(prepareTabbednav);