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) {
		prg02_02_prg02_05_over = newImage("images/prg02_02-prg02_05_over.jpg");
		prg02_02_prg02_07_over = newImage("images/prg02_02-prg02_07_over.jpg");
		prg02_02_prg02_09_over = newImage("images/prg02_02-prg02_09_over.jpg");
		prg02_02_prg02_12_over = newImage("images/prg02_02-prg02_12_over.jpg");
		prg02_02_prg02_14_over = newImage("images/prg02_02-prg02_14_over.jpg");
		prg02_02_prg02_16_over = newImage("images/prg02_02-prg02_16_over.jpg");
		prg02_02_prg02_19_over = newImage("images/prg02_02-prg02_19_over.jpg");
		prg02_02_prg02_21_over = newImage("images/prg02_02-prg02_21_over.jpg");
		prg02_02_prg02_23_over = newImage("images/prg02_02-prg02_23_over.jpg");
		prg02_03_over = newImage("images/prg02_03-over.jpg");
		prg02_05_over = newImage("images/prg02_05-over.jpg");
		prg02_07_over = newImage("images/prg02_07-over.jpg");
		prg02_09_over = newImage("images/prg02_09-over.jpg");
		prg02_12_over = newImage("images/prg02_12-over.jpg");
		prg02_14_over = newImage("images/prg02_14-over.jpg");
		prg02_16_over = newImage("images/prg02_16-over.jpg");
		prg02_19_over = newImage("images/prg02_19-over.jpg");
		prg02_21_over = newImage("images/prg02_21-over.jpg");
		prg02_23_over = newImage("images/prg02_23-over.jpg");
		preloadFlag = true;
	}
}