if (document.images) {	

	//main nav images

	industryon = new Image();
	industryon.src = "/images/nav/industry_roll.gif";
	industryoff = new Image();
	industryoff.src = "/images/nav/industry.gif";
	
	abouton = new Image();
	abouton.src = "/images/nav/about_roll.gif";
	aboutoff = new Image();
	aboutoff.src = "/images/nav/about.gif";
	
	serviceson = new Image();
	serviceson.src = "/images/nav/services_roll.gif";
	servicesoff = new Image();
	servicesoff.src = "/images/nav/services.gif";
	
	eventson = new Image();
	eventson.src = "/images/nav/events_roll.gif";
	eventsoff = new Image();
	eventsoff.src = "/images/nav/events.gif";
	
	facultyon = new Image();
	facultyon.src = "/images/nav/faculty_roll.gif";
	facultyoff = new Image();
	facultyoff.src = "/images/nav/faculty.gif";
	
	libraryon = new Image();
	libraryon.src = "/images/nav/library_roll.gif";
	libraryoff = new Image();
	libraryoff.src = "/images/nav/library.gif";
	
	//descriptions
	
	industry = new Image();
	industry.src = "/images/nav/description_industry.gif";
	
	about = new Image();
	about.src = "/images/nav/description_about.gif";
	
	services = new Image();
	services.src = "/images/nav/description_services.gif";
	
	events = new Image();
	events.src = "/images/nav/description_events.gif";
	
	faculty = new Image();
	faculty.src = "/images/nav/description_faculty.gif";
	
	library = new Image();
	library.src = "/images/nav/description_library.gif";
	

}