if (document.images) 
{
	img1on = new Image(); img1on.src = "images/home_rol.gif";
	img2on = new Image(); img2on.src = "images/news_rol.gif";
	img3on = new Image(); img3on.src = "images/facilities_rol.gif";
	img4on = new Image(); img4on.src = "images/services_rol.gif";
	img5on = new Image(); img5on.src = "images/people_rol.gif";
	img6on = new Image(); img6on.src = "images/community_rol.gif";
	img7on = new Image(); img7on.src = "images/bids_rol.gif";
	img8on = new Image(); img8on.src = "images/contacts_rol.gif";
	img9on = new Image(); img9on.src = "images/go_rol.gif";
	img10on = new Image(); img10on.src = "images/go_rol.gif";
	img11on = new Image(); img11on.src = "images/facilities_broadterm_sub_rol.gif";
	img12on = new Image(); img12on.src = "images/facilities_prodterm_sub_rol.gif";
	img13on = new Image(); img13on.src = "images/facilities_salemterm_sub_rol.gif";
	img14on = new Image(); img14on.src = "images/facilities_streetterm_sub_rol.gif";
	img15on = new Image(); img15on.src = "images/facilities_highway_sub_rol.gif";
	img16on = new Image(); img16on.src = "images/facilities_rail_sub_rol.gif";
	img17on = new Image(); img17on.src = "images/facilities_intermodal_sub_rol.gif";
	img18on = new Image(); img18on.src = "images/facilities_report_sub_rol.gif";
	img19on = new Image(); img19on.src = "images/facilities_reportarch_sub_rol.gif";
	img20on = new Image(); img20on.src = "images/facilities_statistics_tt_rol.gif";
	img21on = new Image(); img21on.src = "images/facilities_statistics_cm_rol.gif";
	img22on = new Image(); img22on.src = "images/facilities_statistics_th_rol.gif";
	img23on = new Image(); img23on.src = "images/board_activity_sub_rol.gif";
	img24on = new Image(); img24on.src = "images/newsletter_sub_rol.gif";
	

	img1off = new Image(); img1off.src = "images/home.gif";
	img2off = new Image(); img2off.src = "images/news.gif";
	img3off = new Image(); img3off.src = "images/facilities.gif";
	img4off = new Image(); img4off.src = "images/services.gif";
	img5off = new Image(); img5off.src = "images/people.gif";
	img6off = new Image(); img6off.src = "images/community.gif";
	img7off = new Image(); img7off.src = "images/bids.gif";
	img8off = new Image(); img8off.src = "images/contacts.gif";
	img9off = new Image(); img9off.src = "images/go.gif";
	img10off = new Image(); img10off.src = "images/go.gif";
	img11off = new Image(); img11off.src = "images/facilities_broadterm_sub.gif";
	img12off = new Image(); img12off.src = "images/facilities_prodterm_sub.gif";
	img13off = new Image(); img13off.src = "images/facilities_salemterm_sub.gif";
	img14off = new Image(); img14off.src = "images/facilities_streetterm_sub.gif";
	img15off = new Image(); img15off.src = "images/facilities_highway_sub.gif";
	img16off = new Image(); img16off.src = "images/facilities_rail_sub.gif";
	img17off = new Image(); img17off.src = "images/facilities_intermodal_sub.gif";
	img18off = new Image(); img18off.src = "images/facilities_report_sub.gif";
	img19off = new Image(); img19off.src = "images/facilities_reportarch_sub.gif";
	img20off = new Image(); img20off.src = "images/facilities_statistics_tt.gif";
	img21off = new Image(); img21off.src = "images/facilities_statistics_cm.gif";
	img22off = new Image(); img22off.src = "images/facilities_statistics_th.gif";
	img23off = new Image(); img23off.src = "images/board_activity_sub.gif";
	img24off = new Image(); img24off.src = "images/newsletter_sub.gif";	

	var imgNow;
}

function imgOn(imgName) {
 if (document.images) {
 document[imgName].src = eval(imgName + "on.src"); }
 }
 function imgOff(imgName) {
 if (document.images) {
	if (imgName != imgNow)
	 document[imgName].src = eval(imgName + "off.src"); } }