// Preload menu background
		btnMenu1BG = new Image();
		btnMenu1BG.src = "image/menu/menu1BG.gif";
		btnMenu2BG = new Image();
		btnMenu2BG.src = "image/menu/menu2BG.gif";
		btnMenu3BG = new Image();
		btnMenu3BG.src = "image/menu/menu3BG.gif";
		btnMenu4BG = new Image();
		btnMenu4BG.src = "image/menu/menu4BG.gif";
		btnMenu5BG = new Image();
		btnMenu5BG.src = "image/menu/menu5BG.gif";
		btnMenu6BG = new Image();
		btnMenu6BG.src = "image/menu/menu6BG.gif";
		btnMenu7BG = new Image();
		btnMenu7BG.src = "image/menu/menu7BG.gif";
		btnMenu8BG = new Image();
		btnMenu8BG.src = "image/menu/menu8BG.gif";
		
		// Preload home page images
		btnMenuLogo = new Image();
		btnMenuLogo.src = "image/logo.jpg";
		btnMenuLHS = new Image();
		btnMenuLHS.src = "image/mainLHS.jpg";
		btnMenuTel = new Image();
		btnMenuTel.src = "image/tel.jpg";

		// Preload menu items
			btnMenuHomeOn = new Image();
			btnMenuHomeOn.src = "image/menu/btnMenuHomeOn.gif";
			btnMenuHomeOff1 = new Image();
			btnMenuHomeOff1.src = "image/menu/btnMenuHomeOff1.gif";
			
			btnMenuAboutOn = new Image();
			btnMenuAboutOn.src = "image/menu/btnMenuAboutOn.gif";
			btnMenuAboutOff1 = new Image();
			btnMenuAboutOff1.src = "image/menu/btnMenuAboutOff1.gif";
			btnMenuAboutOff2 = new Image();
			btnMenuAboutOff2.src = "image/menu/btnMenuAboutOff2.gif";
			
			btnMenuAssignmentsOn = new Image();
			btnMenuAssignmentsOn.src = "image/menu/btnMenuAssignmentsOn.gif";
			btnMenuAssignmentsOff1 = new Image();
			btnMenuAssignmentsOff1.src = "image/menu/btnMenuAssignmentsOff1.gif";
			btnMenuAssignmentsOff2 = new Image();
			btnMenuAssignmentsOff2.src = "image/menu/btnMenuAssignmentsOff2.gif";
			
			btnMenuContactOn = new Image();
			btnMenuContactOn.src = "image/menu/btnMenuContactOn.gif";
			btnMenuContactOff1 = new Image();
			btnMenuContactOff1.src = "image/menu/btnMenuContactOff1.gif";
			
			btnMenuPublicationsOn = new Image();
			btnMenuPublicationsOn.src = "image/menu/btnMenuPublicationsOn.gif";
			btnMenuPublicationsOff1 = new Image();
			btnMenuPublicationsOff1.src = "image/menu/btnMenuPublicationsOff1.gif";
			btnMenuPublicationsOff2 = new Image();
			btnMenuPublicationsOff2.src = "image/menu/btnMenuPublicationsOff2.gif";
			
			btnMenuResourcesOn = new Image();
			btnMenuResourcesOn.src = "image/menu/btnMenuResourcesOn.gif";
			btnMenuResourcesOff1 = new Image();
			btnMenuResourcesOff1.src = "image/menu/btnMenuResourcesOff1.gif";
			btnMenuResourcesOff2 = new Image();
			btnMenuResourcesOff2.src = "image/menu/btnMenuResourcesOff2.gif";
			
			btnMenuServicesOn = new Image();
			btnMenuServicesOn.src = "image/menu/btnMenuServicesOn.gif";
			btnMenuServicesOff1 = new Image();
			btnMenuServicesOff1.src = "image/menu/btnMenuServicesOff1.gif";
			btnMenuServicesOff2 = new Image();
			btnMenuServicesOff2.src = "image/menu/btnMenuServicesOff2.gif";