// loop variables
var layerLoop = 5;
var imageLoop = 18;
	
// image arrays for preloading
if (document.images) { 
    img1on = new Image();          
    img1on.src = "/images/siteres_cal_on.gif";
    img2on = new Image();          
    img2on.src = "/images/siteres_help_on.gif";  
    img3on = new Image();
    img3on.src = "/images/siteres_contact_on.gif";
    img4on = new Image();          
    img4on.src = "/images/siteres_faq_on.gif";  
    img5on = new Image();          
    img5on.src = "/images/siteres_sitemap_on.gif";  
    img6on = new Image();
    img6on.src = "/images/siteres_related_on.gif";  
    img7on = new Image();
    img7on.src = "/images/siteres_employ_on.gif";  
    img8on = new Image();
    img8on.src = "/images/siteres_news_on.gif";
	img9on = new Image();
    img9on.src = "/images/siteres_uncdir_on.gif";

    img10on = new Image();
    img10on.src = "/bios/images/bios_lnav_about_on.gif";
    img11on = new Image();
    img11on.src = "/bios/images/bios_lnav_acad_on.gif";
    img12on = new Image();
    img12on.src = "/bios/images/bios_lnav_pros_on.gif";
    img13on = new Image();
    img13on.src = "/bios/images/bios_lnav_curr_on.gif";
    img14on = new Image();
    img14on.src = "/bios/images/bios_lnav_facstaff_on.gif";
	img15on = new Image();
    img15on.src = "/bios/images/bios_lnav_research_on.gif";
	img16on = new Image();
    img16on.src = "/bios/images/bios_lnav_sem_on.gif";
	img17on = new Image();
    img17on.src = "/bios/images/bios_lnav_alumni_on.gif";
    
    img1off = new Image();          
    img1off.src = "/images/siteres_cal_off.gif";
    img2off = new Image();          
    img2off.src = "/images/siteres_help_off.gif";  
    img3off = new Image();
    img3off.src = "/images/siteres_contact_off.gif";
    img4off = new Image();          
    img4off.src = "/images/siteres_faq_off.gif";  
    img5off = new Image();          
    img5off.src = "/images/siteres_sitemap_off.gif";  
    img6off = new Image();
    img6off.src = "/images/siteres_related_off.gif";  
    img7off = new Image();
    img7off.src = "/images/siteres_employ_off.gif";  
    img8off = new Image();
    img8off.src = "/images/siteres_news_off.gif";
	img9off = new Image();
    img9off.src = "/images/siteres_uncdir_off.gif";

    img10off = new Image();
    img10off.src = "/bios/images/bios_lnav_about_off.gif";
    img11off = new Image();
    img11off.src = "/bios/images/bios_lnav_acad_off.gif";
    img12off = new Image();
    img12off.src = "/bios/images/bios_lnav_pros_off.gif";
    img13off = new Image();
    img13off.src = "/bios/images/bios_lnav_curr_off.gif";
	img14off = new Image();
    img14off.src = "/bios/images/bios_lnav_facstaff_off.gif";
    img15off = new Image();
    img15off.src = "/bios/images/bios_lnav_research_off.gif";
	img16off = new Image();
    img16off.src = "/bios/images/bios_lnav_sem_off.gif";
	img17off = new Image();
    img17off.src = "/bios/images/bios_lnav_alumni_off.gif";
}