var activeLinks = {
	tabnav: "parentlinks",
	mostpopular: "popularlinks",
	itbs: "literacy",
	benchmark: "bm_math",
	ap: "slide1",
	lunchmenus: "L0"
};

function Divswap(section,id,show) {
	if (document.getElementById) {
		var tabs = document.getElementById(section).getElementsByTagName("a");
		for (var i = 0; i < tabs.length; i++) {
			tabs[i].className = "";
		}
		document.getElementById(activeLinks[section]).style.display = "none";
		document.getElementById(show).style.display = "block";
		id.className = "active";
		activeLinks[section] = show;
		return false;
	} else {
		return true;
	}
}

function swapNavBarMode() {
	var designator = "bps=";
	var nameEQ = "navBarMode=";
	var ca = document.cookie.split('; ');
	for (var i = 0; i < ca.length; i++) {
		var c = ca[i];
		while (c.charAt(0) == ' ') {
			c = c.substring(1,c.length);
		}
		if (designator && designator.length > 0) {
			if (c.indexOf(designator) == 0) {
				c = c.substring(designator.length,c.length);
				var cb = c.split('&');
				for (var j = 0; j < cb.length; j++) {
					if (cb[j].indexOf(nameEQ) == 0) {
						var navBarMode = cb[j].substring(nameEQ.length,c.length);
					}
				}
			}
		}
		else if (c.indexOf(nameEQ) == 0)
			var navBarMode = c.substring(nameEQ.length,c.length);
	}
	var date = new Date();
	date.setTime(date.getTime()+(10*365*24*60*60*1000));
	var expires = "; expires=" + date.toGMTString();
	document.cookie = (designator ? designator : "") + nameEQ + (navBarMode == "vertical" ? "horizontal" : "vertical") + expires + "; path=/";
	document.getElementById("navigation").className = (navBarMode == "vertical" ? "" : "ver");
	return false;
}

var banner_num = 0;
var openId = "none";
var doCheck = (document.all!=null);

if (doCheck == false) {
	versionNN = navigator.appVersion;
	if (versionNN.search(/5.0/i) == -1) {
		browser = "NN4";
	} else {
		browser = "NN6";
	}
} else {
	browser = "IE";
}

function rollOver(name) {
	document.images[name].src = "/web/images/nav_images/ON_"+name+".jpg";
}

function rollOut(name) {
	document.images[name].src = "/web/images/nav_images/OFF_"+name+".jpg";
}

function getLayer(id) {
	if (browser == "IE")
		return document.all[id];
	else if (browser == "NN4")
		return document.layers[id];
	else
		return document.getElementById(id);
}

function showLayer(id) {
	var get = getLayer(id)
	if (get != null)
		if (browser == "IE" || browser == "NN6")
			get.style.visibility = "visible";
		else if (browser == "NN4")
			get.visibility = "show";
}

function hideLayer(id) {
	var get = getLayer(id)
	if (get != null)
		if (browser == "IE" || browser == "NN6")
			get.style.visibility = "hidden";
		else
			get.visibility = "hide";
}

function getnavmenu(id,div) {
	if (div == 'true') {
		idDiv = id+'Div';
		if (openId == 'none') {
			showLayer(idDiv);
			rollOver(id);
			openId = id;
			openIdDiv = idDiv;
		} else {
			hideLayer(openIdDiv);
			rollOut(openId);
			showLayer(idDiv);
			rollOver(id);
			openId = id;
			openIdDiv = idDiv;
		}
	} else {
		if (openId == 'none') {
			rollOver(id);
		} else {
			hideLayer(openIdDiv);
			rollOut(openId);
			rollOver(id);
			openId = 'none';
		}
	}
}

function divrollover(name) {
	openId = name;
	openIdDiv = name+"Div";
	showLayer(openIdDiv);
	rollOver(openId);
}

function divrollout(name) {
	hideLayer(name+'Div');
	rollOut(name);
	openId = 'none';
	openIdDiv = 'none';
}