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) {
		id0311topir_01_0311topir_02_over = newImage("images_tops/0311topir_01-0311topir_02_o.gif");
		id0311topir_01_0311topir_03_over = newImage("images_tops/0311topir_01-0311topir_03_o.gif");
		id0311topir_01_0311topir_04_over = newImage("images_tops/0311topir_01-0311topir_04_o.gif");
		id0311topir_01_0311topir_05_over = newImage("images_tops/0311topir_01-0311topir_05_o.gif");
		id0311topir_01_0311topir_06_over = newImage("images_tops/0311topir_01-0311topir_06_o.gif");
		id0311topir_01_0311topir_07_over = newImage("images_tops/0311topir_01-0311topir_07_o.gif");
		id0311topir_01_0311topir_08_over = newImage("images_tops/0311topir_01-0311topir_08_o.gif");
		id0311topir_01_0311topir_09_over = newImage("images_tops/0311topir_01-0311topir_09_o.gif");
		id0311topir_02_over = newImage("images_tops/0311topir_02-over.gif");
		id0311topir_03_over = newImage("images_tops/0311topir_03-over.gif");
		id0311topir_04_over = newImage("images_tops/0311topir_04-over.gif");
		id0311topir_05_over = newImage("images_tops/0311topir_05-over.gif");
		id0311topir_06_over = newImage("images_tops/0311topir_06-over.gif");
		id0311topir_07_over = newImage("images_tops/0311topir_07-over.gif");
		id0311topir_08_over = newImage("images_tops/0311topir_08-over.gif");
		id0311topir_09_over = newImage("images_tops/0311topir_09-over.gif");
		preloadFlag = true;
	}
}