function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		pgdn_member_over = newImage("images/pgdn-member-over.gif");
		pgdn_navabout_over = newImage("images/pgdn-navabout-over.gif");
		pgdn_nav1_pgdn_navabout_over = newImage("images/pgdn-nav1-pgdn-navabout_ove.gif");
		pgdn_navhistory_over = newImage("images/pgdn-navhistory-over.gif");
		pgdn_nav2_pgdn_navhistory_over = newImage("images/pgdn-nav2-pgdn-navhistory_o.gif");
		pgdn_navleg_over = newImage("images/pgdn-navleg-over.gif");
		pgdn_navleg2_pgdn_navleg_over = newImage("images/pgdn-navleg2-pgdn-navleg_ov.gif");
		pgdn_navissues_over = newImage("images/pgdn-navissues-over.gif");
		pgdn_navissue2_pgdn_navissues_over = newImage("images/pgdn-navissue2-pgdn-navissu.gif");
		pgdn_navlinks_over = newImage("images/pgdn-navlinks-over.gif");
		pgdn_nav4_pgdn_navlinks_over = newImage("images/pgdn-nav4-pgdn-navlinks_ove.gif");
		pgdn_navcontact_over = newImage("images/pgdn-navcontact-over.gif");
		pgdn_nav5_pgdn_navcontact_over = newImage("images/pgdn-nav5-pgdn-navcontact_o.gif");
		pgdn_navhome_over = newImage("images/pgdn-navhome-over.gif");
		pgdn_nav6_pgdn_navhome_over = newImage("images/pgdn-nav6-pgdn-navhome_over.gif");
		pgdn_navmem_over = newImage("images/pgdn-navmem-over.gif");
		pgdn_arrow_pgdn_navmem_over = newImage("images/pgdn-arrow-pgdn-navmem_over.gif");
		pgdn_navjoin_over = newImage("images/pgdn-navjoin-over.gif");
		pgdn_arrow2_pgdn_navjoin_over = newImage("images/pgdn-arrow2-pgdn-navjoin_ov.gif");
		pgdn_navmtg_over = newImage("images/pgdn-navmtg-over.gif");
		pgdn_nav7_pgdn_navmtg_over = newImage("images/pgdn-nav7-pgdn-navmtg_over.gif");		
		preloadFlag = true;
	}
}