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) {
		ui_nav_home_10 = newImage("image/ui-nav-home_10.gif");
		ui_nav_bio_11 = newImage("image/ui-nav-bio_11.gif");
		ui_nav_speakingEngagements_12 = newImage("image/ui-nav-speakingEngagemen-08.gif");
		ui_nav_plantPicks_13 = newImage("image/ui-nav-plantPicks_13.gif");
		ui_nav_greenIndustry_14 = newImage("image/ui-nav-greenIndustry_14.gif");
		ui_nav_consumerIndustry_15 = newImage("image/ui-nav-consumerIndustry_15.gif");
		ui_nav_rupportGardens_16 = newImage("image/ui-nav-rupportGardens_16.gif");
		ui_nav_about_17 = newImage("image/ui-nav-about_17.gif");
		ui_nav_ruppertGardens_2 = newImage("image/ui-nav-ruppertGardens_2.gif");
		ui_nav_consumerInfo_2 = newImage("image/ui-nav-consumerInfo_2.gif");
		ui_nav_plantLists_2 = newImage("image/ui-nav-plantLists_2.gif");
		preloadFlag = true;
	}
}