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) {
		index_10_over = newImage("../images2/index_10-over.gif");
		index_11_over = newImage("images/index_11-over.gif");
		index_15_over = newImage("../images2/index_15-over.gif");
		index_16_over = newImage("images/index_16-over.gif");
		index_19_over = newImage("../images2/index_19-over.gif");
		index_20_over = newImage("images/index_20-over.gif");
		index_24_over = newImage("../images2/index_24-over.gif");
		index_25_over = newImage("images/index_25-over.gif");
		index_28_over = newImage("../images2/index_28-over.gif");
		index_29_over = newImage("images/index_29-over.gif");
		index_32_over = newImage("../images2/index_32-over.gif");
		index_39_over = newImage("../images2/index_39-over.gif");
		preloadFlag = true;
	}
}