if (navigator.appName.indexOf("WebTV") != -1) { 
	window.location.href = "/html/help/misc/webtv.html"; 
}
abouton = new Image();
abouton.src = "/images/tab_about_r.gif";
aboutoff = new Image();
aboutoff.src = "/images/tab_about.gif";

serviceson = new Image();
serviceson.src = "/images/tab_services_r.gif";
servicesoff = new Image();
servicesoff.src = "/images/tab_services.gif";

newsinfoon = new Image();
newsinfoon.src = "/images/tab_news_r.gif";
newsinfooff = new Image();
newsinfooff.src = "/images/tab_news.gif";

careerson = new Image();
careerson.src = "/images/tab_careers_r.gif";
careersoff = new Image();
careersoff.src = "/images/tab_careers.gif";

projectson = new Image();
projectson.src = "/images/tab_projects_r.gif";
projectsoff = new Image();
projectsoff.src = "/images/tab_projects.gif";


//get browser type
var bName = navigator.appName;
var browser;

if(bName == "Netscape") {
	browser = "nn";
}

//image rollover for sub navs.
function subOn(subNav, img) {
}

function subOff(subNav, img) {
}

var mainSwitch = 0;
var isModelsOn = false;
var isMarketsOn = false;
var isCurrentProjectsOn = false;
var isPastProjectsOn = false;
var lastLayer;
var lastImgLayer;
var lastImg;
var x1,x2,y1,y2;

function turnOn() {
	mainSwitch = 1;
}


if (window.captureEvents) {
        window.captureEvents(Event.MOUSEMOVE);
        window.onmousemove = mouseTracker;
} else {
        document.onmousemove = mouseTracker;
        
}

function menuSwitch(aLayer,imgName) {
	if (mainSwitch == 1) {
		if (lastLayer != null) {
			hide(lastLayer);
			changeImage(lastImg,lastImg + 'off','false');
		}
		changeImage(imgName,imgName + 'on','false');
		show(aLayer)
		lastLayer = aLayer;
		lastImg = imgName;
	}
}

function changeImage(imgName,imgObj,isLayerOn) {
	if (mainSwitch == 1) {
		if (isModelsOn == true) {
			hide('models');
		}
		if (isMarketsOn == true) {
			hide('markets');
		}
		if (isCurrentProjectsOn == true) {
			hide('currentprojects');
		}
		if (isPastProjectsOn == true) {
			hide('pastprojects');
		}
		if (isLayerOn == 'true' && lastLayer != null) {
			hide(lastLayer);
			lastLayer = null;
			window.document.images[lastImg].src = eval(lastImg + "off.src");
		}
		window.document.images[imgName].src = eval(imgObj + ".src");
	}
}

function changeLayerLast(isLayerOn) {
	if (mainSwitch == 1) {
		if (isModelsOn == true) {
			hide('models');
		}
		if (isMarketsOn == true) {
			hide('markets');
		}
		if (isCurrentProjectsOn == true) {
			hide('currentprojects');
		}
		if (isPastProjectsOn == true) {
			hide('pastprojects');
		}
		if (isLayerOn == 'true' && lastLayer != null) {
			hide(lastLayer);
			lastLayer = null;
			window.document.images[lastImg].src = eval(lastImg + "off.src");
		}		
	}
}

// hide element  
function hide(aLayer) {
	if (mainSwitch == 1) {
		if (aLayer == 'models') {
			isModelsOn = false;
			subOff('services', 'service1');
		}
		if (aLayer == 'markets') {
			isMarketsOn = false;
			subOff('services', 'services');
		}
		if (aLayer == 'currentprojects') {
			isCurrentProjectsOn = false;
		}
				if (aLayer == 'pastprojects') {
			isPastProjectsOn = false;
		}
	  	theobjs[aLayer].objHide();
	}
}

// show element
function show(aLayer) {
	if (mainSwitch == 1) {
		if (aLayer == 'models') {
			isModelsOn = true;
// I was trying something DLP
//			isMarketsOn = false;
			subOn('services', 'service1');
		}
		if (aLayer == 'markets') {
			isMarketsOn = true;
// I was trying something DLP
//			isModelsOn = false;
			subOn('services', 'services');
		}
		if (aLayer == 'currentprojects') {
			isCurrentProjectsOn = true;
		}
		if (aLayer == 'pastprojects') {
			isPastProjectsOn = true;
		}
	   	theobjs[aLayer].objShow();
	}
}

//popup window function
//pass the url, the width, and the height
var theWin

function popup(theURL, width, height) {

	if(theWin == null || theWin.closed) {
		theWin = window.open(theURL, "popup", "toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=no,resizable=no,width=" + width + ",height=" + height + ",top=100,left=100");
	} else {
		theWin.close()
		theWin = window.open(theURL, "popup", "toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=no,resizable=no,width=" + width + ",height=" + height + ",top=100,left=100");
	}
}