var isDOM = (document.getElementById)?true:false;
var isIE4 = ((document.all)&&(!isDOM))?true:false;
var isNS4 = (document.layers)?true:false;
var isIE = (document.all)?true:false;
var isNS6 = ((isDOM)&&(!isIE))?true:false;
var isMac = (navigator.appVersion.indexOf("Mac") != -1)?true:false;

// fixes a resize/DHTML issue with Netscape 4.x browsers
if (document.layers) {
	origWinWidth = window.innerWidth;
	origWinHeight = window.innerHeight;
	
	window.onresize = function() {
		currWinWidth = window.innerWidth;
		currWinHeight = window.innerHeight;
		if((origWinWidth != currWinWidth) || (origWinHeight != currWinHeight)) location.reload();
	}
}

function swapImage() {
	if (document.images) {
		for(var i=0;i<arguments.length;i++) {
			document.images[arguments[i]].src = arguments[i+1];
			++i;
		}
	}
}

function swapLink() {
	for(var i=0;i<arguments.length;i++) {
		document.getElementById('bsa_custom_bgphoto_link').setAttribute('href', arguments[i+1]);
		++i;
	}
}

function swapAlt() {
	if (document.images) {
		for(var i=0;i<arguments.length;i++) {
			document.images[arguments[i]].alt = arguments[i+1];
			++i;
		}
	}
}

var nsLayer = "";

function swapLayerImage() {
	if (!initialized) return;
	
	if ((!isNS4)&&(document.images)) {
		for(var i=0;i<arguments.length;i++) {
			document.images[arguments[i]].src = arguments[i+1];
			++i;
		}
	} else if ((isNS4)&&(document.images)) {
		for(var i=0;i<arguments.length;i++) {
			eval("document."+nsLayer).document.images[arguments[i]].src = arguments[i+1];
			++i;
		}
	}
}

function openEventDetailWin(href) {
	var w = window.open(href,"","width=300,height=300,scrollbars");
}

///////////////////////////////
// preloadImages()
// - preload second-level menu element images
///////////////////////////////
function preloadImages() {
	var imgArray = new Array;
	for(var i=0;i<arguments.length;i++) {
		imgArray[i] = new Image;
		imgArray[i].src = arguments[i];
	}
	return imgArray;
}

function preloadLinks() {
	var linkArray = new Array;
	for(var i=0;i<arguments.length;i++) {
		linkArray[i] = arguments[i];
	}
	return linkArray;
}

function preloadAlts() {
	var altArray = new Array;
	for(var i=0;i<arguments.length;i++) {
		altArray[i] = arguments[i];
	}
	return altArray;
}


if (document.layers) {
	document.write('<link rel="stylesheet" type="text/css" href="/common/level2_ns4only.css" />');
}