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) {
		indexjb_02_over = newImage("images/indexjb_02-over.jpg");
		indexjb_03_over = newImage("images/indexjb_03-over.jpg");
		indexjb_04_over = newImage("images/indexjb_04-over.jpg");
		indexjb_05_over = newImage("images/indexjb_05-over.jpg");
		indexjb_06_over = newImage("images/indexjb_06-over.jpg");
		indexjb_12_over = newImage("images/indexjb_12-over.jpg");
		indexjb_13_over = newImage("images/indexjb_13-over.jpg");
		indexjb_14_over = newImage("images/indexjb_14-over.jpg");
		indexjb_15_over = newImage("images/indexjb_15-over.jpg");
		indexjb_16_over = newImage("images/indexjb_16-over.jpg");
		indexjb_18_over = newImage("images/indexjb_18-over.jpg");
		indexjb_19_over = newImage("images/indexjb_19-over.jpg");
		indexjb_20_over = newImage("images/indexjb_20-over.jpg");
		indexjb_21_over = newImage("images/indexjb_21-over.jpg");
		indexjb_22_over = newImage("images/indexjb_22-over.jpg");
		preloadFlag = true;
	}
}