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

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

var preloadFlag = false;
function preloadImagesArrows() {
	if (document.images) {
		arrows_02_over = newImage("../images/arrows/volumetwo/arrows_02-over.gif");
		arrows_03_over = newImage("../images/arrows/volumetwo/arrows_03-over.gif");
		preloadFlag = true;
	}
}