function preLoadNavMenu() {
		DifferenceOff = new Image();
		DifferenceOff.src = "images/aboutus.gif";
		ServicesOff = new Image();
		ServicesOff.src = "images/servicesoff.gif";
		PortfolioOff = new Image();
		PortfolioOff.src = "images/portfoliooff.gif";
		AffiliationOff = new Image();
		AffiliationOff.src = "images/affiliationsoff.gif";
		PartnerShipsOff = new Image();
		PartnerShipsOff.src = "images/brandsoff.gif";
		ShowroomOff = new Image();
		ShowroomOff.src = "images/showroomoff.gif";
		ReferencesOff = new Image();
		ReferencesOff.src = "images/referencesoff.gif";
		ContactOff = new Image();
		ContactOff.src = "images/contactoff.gif";
		HomeOff = new Image();
		HomeOff.src = "images/homeoff.gif";

		DifferenceOn = new Image();
		DifferenceOn.src = "images/aboutuson.gif";
		ServicesOn = new Image();
		ServicesOn.src = "images/serviceson.gif";
		PortfolioOn = new Image();
		PortfolioOn.src = "images/portfolioon.gif";
		AffiliationOn = new Image();
		AffiliationOn.src = "images/affiliationson.gif";
		PartnerShipsOn = new Image();
		PartnerShipsOn.src = "images/brandson.gif";
		ShowroomOn = new Image();
		ShowroomOn.src = "images/showroomon.gif";
		ReferencesOn = new Image();
		ReferencesOn.src = "images/referenceson.gif";
		ContactOn = new Image();
		ContactOn.src = "images/contacton.gif";
		HomeOn = new Image();
		HomeOn.src = "images/homeon.gif";
		
		preLoadComputerImages();
	}
	
	function preLoadComputerImages() {
		ComputerOff = new Image();
	
		DifferenceComputer = new Image();
		DifferenceComputer.src = "images/ids_difference_screen.jpg";
		ServicesComputer = new Image();
		ServicesComputer.src = "images/services_screen.jpg";
		PortfolioComputer = new Image();
		PortfolioComputer.src = "images/portfolio_screen.jpg";
		AffiliationComputer = new Image();
		AffiliationComputer.src = "images/affiliations_screen.jpg";
		PartnerShipsComputer = new Image();
		PartnerShipsComputer.src = "images/brands_screen.jpg";
		ShowroomComputer = new Image();
		ShowroomComputer.src = "images/showroom_screen.jpg";
		ReferencesComputer = new Image();
		ReferencesComputer.src = "images/references_screen.jpg";
		ContactComputer = new Image();
		ContactComputer.src = "images/contact_screen.jpg";
		HomeComputer = new Image();
		HomeComputer.src = "images/screen.jpg";
	}
	
	function preloadServicesNav() {
		singleDotOff = new Image();
		singleDotOff.src = "images/services_dot_off.gif";
		singleDotOn = new Image();
		singleDotOn.src = "images/services_dot_on.gif";
		
		doubleDotOff = new Image();
		doubleDotOff.src = "images/services_dot_off_double.gif";
		doubleDotOn = new Image();
		doubleDotOn.src = "images/services_dot_on_double.gif";

		HomeTheaterComputer = new Image();
		HomeTheaterComputer.src = "images/home_theater_screen.jpg";
		WholeHouseComputer = new Image();
		WholeHouseComputer.src = "images/wholehouse_screen.jpg";
		LightingComputer = new Image();
		LightingComputer.src = "images/lighting_screen.jpg";
		SecurityComputer = new Image();
		SecurityComputer.src = "images/security_screen.jpg";
		PhoneComputer = new Image();
		PhoneComputer.src = "images/phone_screen.jpg";
		CablingComputer = new Image();
		CablingComputer.src = "images/cabling_screen.jpg";
		TivoComputer = new Image();
		TivoComputer.src = "images/tivo_screen.jpg";
		ExtendedComputer = new Image();
		ExtendedComputer.src = "images/service_plan_screen.jpg";
		HomeAutoComputer = new Image();
		HomeAutoComputer.src = "images/auto_screen.jpg";
	}

	function preLoadMainImages() {
		TheaterOff = new Image();
		TheaterOff.src = "images/FINAL-Home-Page-REV_06.gif";
		WholeHouseOff = new Image();
		WholeHouseOff.src = "images/FINAL-Home-Page-REV_08.gif";
		SecurityOff = new Image();
		SecurityOff.src = "images/FINAL-Home-Page-REV_03.gif";
		TelephoneOff = new Image();
		TelephoneOff.src = "images/FINAL-Home-Page-REV_14.gif";
		CablingOff = new Image();
		CablingOff.src = "images/FINAL-Home-Page-REV_20.gif";
		AutomationOff = new Image();
		AutomationOff.src = "images/FINAL-Home-Page-REV_22.gif";
		LightingControlOff = new Image();
		LightingControlOff.src = "images/FINAL-Home-Page-REV_17.gif";

		TheaterOn = new Image();
		TheaterOn.src = "images/FINAL-Home-Page-REV_06-over.gif";
		WholeHouseOn = new Image();
		WholeHouseOn.src = "images/FINAL-Home-Page-REV_08-over.gif";
		SecurityOn = new Image();
		SecurityOn.src = "images/FINAL-Home-Page-REV_03-over.gif";
		TelephoneOn = new Image();
		TelephoneOn.src = "images/FINAL-Home-Page-REV_14-over.gif";
		CablingOn = new Image();
		CablingOn.src = "images/FINAL-Home-Page-REV_20-over.gif";
		AutomationOn = new Image();
		AutomationOn.src = "images/FINAL-Home-Page-REV_22-over.gif";
		LightingControlOn = new Image();
		LightingControlOn.src = "images/FINAL-Home-Page-REV_17-over.gif";
	}

	function light(imgName) {
	    if (document.images) {
	         document[imgName].src = eval(imgName + 'On.src');
	    }
	}

	function dim(imgName) {
	    if (document.images) {
	         document[imgName].src = eval(imgName + 'Off.src');
	    }
	}
	
	function lightComputer(imgName) {
	    if (document.images) {
	         document.compScreen.src = eval(imgName + 'Computer.src');
	    }
	}
	
	function dimComputer() {
	    if (document.images) {
		 document.compScreen.src = ComputerOff.src;
	    }
	}
	
	function lightDot(imgName, lines) {
		document[imgName].src = eval( lines + 'DotOn.src' );
	}
	
	function dimDot(imgName, lines) {
		document[imgName].src = eval( lines + 'DotOff.src') ;
	}
	
	function lightServices(imgName) {
		if (document.images) {
			lightDot(imgName, 'single');
			lightComputer(imgName);
		}
	}
	
	function dimServices(imgName) {
		if (document.images) {
			dimDot(imgName, 'single');
			dimComputer();
		}
	}
	
	function lightServicesDouble(imgName) {
		if (document.images) {
			lightDot(imgName, 'double');
			lightComputer(imgName);
		}
	}
		
	function dimServicesDouble(imgName) {
		if (document.images) {
			dimDot(imgName, 'double');
			dimComputer();
		}
	}
	
	function lightNav(imgName) {
		light(imgName);
		lightComputer(imgName);
	}
	
	function dimNav(imgName) {
		dim(imgName);
		dimComputer();
	}