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) {
		over_home = newImage(/*URL*/'images/home_r.gif');
		over_about = newImage(/*URL*/'images/about_r.gif');
		over_board = newImage(/*URL*/'images/board_r.gif');
		over_watercleanup = newImage(/*URL*/'images/watercleanup_r.gif');
		over_links = newImage(/*URL*/'images/links_r.gif');
		preloadFlag = true;
	}
}