if(document.images) {
	
	research = new Image;
	research.src = "/images/nav/n2-research.gif";
	
	research_over = new Image;
	research_over.src = "/images/nav/n2-research-over.gif";
	
	progs_services = new Image;
	progs_services.src = "/images/nav/n2-progs-services.gif";
		
	progs_services_over = new Image;
	progs_services_over.src = "/images/nav/n2-progs-services-over.gif";
	
	partners = new Image;
	partners.src = "/images/nav/n2-partners.gif";

	partners_over = new Image;
	partners_over.src = "/images/nav/n2-partners-over.gif";
	
		
	faqs = new Image;
	faqs.src = "/images/nav/n2-faqs.gif";

	faqs_over = new Image;
	faqs_over.src = "/images/nav/n2-faqs-over.gif";
	
	
	indy_eval = new Image;
	indy_eval.src = "/images/nav/n2-indy-eval.gif";

	indy_eval_over = new Image;
	indy_eval_over.src = "/images/nav/n2-indy-eval-over.gif";
	
	laser_broch = new Image;
	laser_broch.src = "/images/nav/n2-laser-broch.gif";

	laser_broch_over = new Image;
	laser_broch_over.src = "/images/nav/n2-laser-broch-over.gif";
	
	nsf_supp = new Image;
	nsf_supp.src = "/images/nav/n2-nsf-supp.gif";
	
	nsf_supp_over = new Image;
	nsf_supp_over.src = "/images/nav/n2-nsf-supp-over.gif";
	
	
	
	
// tertiary navigation

	natl_acad = new Image;
	natl_acad.src = "/images/nav/n3-natl-acad.gif";
		
	natl_acad_over = new Image;
	natl_acad_over.src = "/images/nav/n3-natl-acad-over.gif"
	
	contact = new Image;
	contact.src = "/images/nav/n2-contact.gif";

	contact_over = new Image;
	contact_over.src = "/images/nav/n2-contact-over.gif";
}