function init() {
		// Initialization routines for all pages go here.
		loadImages(); // preload navbar over states
		lightGo(); // preload navbar go button over state
//		sfHover(); // initialize navbar rollovers for IE
		init_nav();
		init_rollovers();
		window.name = "main";// name current window "main"
}


/**	nav for ie 	**/
/** cribbed from dbulli **/
function sfHover() {
	var sfEls = document.getElementById("navbar").getElementsByTagName("li");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" hover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className = "";
		}
	}
}


function init_nav() {
	var navbar = document.getElementById("navbar").getElementsByTagName("li");
	for (var i=0; i<navbar.length; i++) {
		if (navbar[i].id.search(/nav_/) != -1) {
			navbar[i].onmouseover = function() { this.setAttribute((document.all ? 'className' : 'class'),'hover'); };
			navbar[i].onmouseout = function() { this.setAttribute((document.all ? 'className' : 'class'),''); };
		}
	}
}


function loadImages() {
	if(document.images) {
		var ImgArray = new Array();
		for (var i = 0; i < 10; i++) {
			ImgArray[i] = new Image();
		}    
		var loc = window.location.href;
		var path;
		if(loc.search(/contemporary/) != -1) {
			path = "/wgbh/masterpiece/contemporary/images/";
			ImgArray[0].src = path + "headernav_home_over.gif";
			ImgArray[1].src = path + "headernav_schedule_over.gif";
			ImgArray[2].src = path + "headernav_archive_over.gif";
			ImgArray[3].src = path + "headernav_learn_over.gif";
			ImgArray[4].src = path + "headernav_bookclub_over.gif";
			ImgArray[5].src = path + "headernav_connect_over.gif";
			ImgArray[6].src = path + "headernav_shop_over.gif";
			ImgArray[7].src = path + "headernav_subscribe_over.gif";
			ImgArray[8].src = path + "headernav_search_over.gif";
			ImgArray[9].src = path + "headernav_go_over.gif";
		} else if (loc.search(/mystery/) != -1) {
			path = "/wgbh/masterpiece/mystery/images/";
			ImgArray[0].src = path + "headernav_home_over.gif";
			ImgArray[1].src = path + "headernav_schedule_over.gif";
			ImgArray[2].src = path + "headernav_archive_over.gif";
			ImgArray[3].src = path + "headernav_learn_over.gif";
			ImgArray[4].src = path + "headernav_bookclub_over.gif";
			ImgArray[5].src = path + "headernav_connect_over.gif";
			ImgArray[6].src = path + "headernav_shop_over.gif";
			ImgArray[7].src = path + "headernav_subscribe_over.gif";
			ImgArray[8].src = path + "headernav_search_over.gif";
			ImgArray[9].src = path + "headernav_go_over.gif";
		} else if (loc.search(/classic/) != -1) {
			path = "/wgbh/masterpiece/classic/images/";
			ImgArray[0].src = path + "headernav_home_over.gif";
			ImgArray[1].src = path + "headernav_schedule_over.gif";
			ImgArray[2].src = path + "headernav_archive_over.gif";
			ImgArray[3].src = path + "headernav_learn_over.gif";
			ImgArray[4].src = path + "headernav_bookclub_over.gif";
			ImgArray[5].src = path + "headernav_connect_over.gif";
			ImgArray[6].src = path + "headernav_shop_over.gif";
			ImgArray[7].src = path + "headernav_subscribe_over.gif";
			ImgArray[8].src = path + "headernav_search_over.gif";
			ImgArray[9].src = path + "headernav_go_over.gif";
		} else {
			path = "/wgbh/masterpiece/images/";
		ImgArray[0].src = path + "headernav_home_over.gif";
		ImgArray[1].src = path + "headernav_schedule_over.gif";
		ImgArray[2].src = path + "headernav_archive_over.gif";
		ImgArray[3].src = path + "headernav_learn_over.gif";
		ImgArray[4].src = path + "headernav_bookclub_over.gif";
		ImgArray[5].src = path + "headernav_connect_over.gif";
		ImgArray[6].src = path + "headernav_shop_over.gif";
		ImgArray[7].src = path + "headernav_subscribe_over.gif";
		ImgArray[8].src = path + "headernav_search_over.gif";
		ImgArray[9].src = path + "headernav_go_over.gif";
		}
	}
}

function lightGo() { 
	if(document.getElementById('go')) {
		var go = document.getElementById('go');
		if(go.src.search(/contemporary/) != -1) {
		go.onmouseover = function() { this.src = "/wgbh/masterpiece/contemporary/images/headernav_go_over.gif"; };
		go.onmouseout = function() { this.src = "/wgbh/masterpiece/contemporary/images/headernav_go.gif"; };
		} else if (go.src.search(/mystery/) != -1) {
		go.onmouseover = function() { this.src = "/wgbh/masterpiece/mystery/images/headernav_go_over.gif"; };
		go.onmouseout = function() { this.src = "/wgbh/masterpiece/mystery/images/headernav_go.gif"; };
		} else if (go.src.search(/classic/) != -1) {
		go.onmouseover = function() { this.src = "/wgbh/masterpiece/classic/images/headernav_go_over.gif"; };
		go.onmouseout = function() { this.src = "/wgbh/masterpiece/classic/images/headernav_go.gif"; };
		} else {
		go.onmouseover = function() { this.src = "/wgbh/masterpiece/images/headernav_go_over.gif"; };
		go.onmouseout = function() { this.src = "/wgbh/masterpiece/images/headernav_go.gif"; };
		}
	}
}

function init_rollovers() {
	var links = new Array();
	links = document.getElementsByTagName("img");
	for (var i=0; i< links.length; i++) {
		if (links[i].className.search(/rollover/) != -1) {
			var ext = links[i].src.substr(links[i].src.length-4, links[i].src.length);
			var url_noext = links[i].src.substr(0,links[i].src.length-4);
			links[i].onmouseover = function () { this.src = url_noext + "_over" + ext; } ;
			links[i].onmouseout = function() { this.src = url_noext + ext; } ;
		}
	}
}