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) {
		side_01_over = newImage("images/side_01-over.gif");
		side_02_over = newImage("images/side_02-over.gif");
		side_03_over = newImage("images/side_03-over.gif");
		side_04_over = newImage("images/side_04-over.gif");
		side_05_over = newImage("images/side_05-over.gif");
		kws_bloomberg_over = newImage("images/kws_bloomberg-over.gif");
		kws_web_over = newImage("images/kws_web-over.gif");
		preloadFlag = true;
	}
}