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) {
		main_peach_over = newImage("images/main-peach_over.gif");
		main_pink_over = newImage("images/main-pink_over.gif");
		main_plum_over = newImage("images/main-plum_over.gif");
		main_sky_over = newImage("images/main-sky_over.gif");
		main_sea_over = newImage("images/main-sea_over.gif");
		main_mint_over = newImage("images/main-mint_over.gif");
		preloadFlag = true;
	}
}