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) {

		mbtn_other_001_over = newImage("images/mbtn_other_001_on.gif");
		mbtn_other_002_over = newImage("images/mbtn_other_002_on.gif");
		mbtn_other_003_over = newImage("images/mbtn_other_003_on.gif");

		mbtn_wine21_001_over = newImage("images/mbtn_wine21_001_on.gif");

		mbtn_per_l_001_over = newImage("images/mbtn_per_l_001_on.gif");
		mbtn_per_l_002_over = newImage("images/mbtn_per_l_002_on.gif");
		mbtn_per_l_003_over = newImage("images/mbtn_per_l_003_on.gif");
		mbtn_per_l_004_over = newImage("images/mbtn_per_l_004_on.gif");

		mbtn_pro_l_001_over = newImage("images/mbtn_pro_l_001_on.gif");
		mbtn_pro_l_002_over = newImage("images/mbtn_pro_l_002_on.gif");
		mbtn_pro_l_003_over = newImage("images/mbtn_pro_l_003_on.gif");
		mbtn_pro_l_004_over = newImage("images/mbtn_pro_l_004_on.gif");

		mbtn_per_l_ttl_over = newImage("images/mbtn_per_l_ttl_on.gif");
		mbtn_pro_l_ttl_over = newImage("images/mbtn_pro_l_ttl_on.gif");

		mbtn_per_s_ttl_over = newImage("images/mbtn_per_s_ttl_on.gif");
		mbtn_pro_s_ttl_over = newImage("images/mbtn_pro_s_ttl_on.gif");

		mbtn_per_s_001_over = newImage("images/mbtn_per_s_001_on.gif");
		mbtn_per_s_002_over = newImage("images/mbtn_per_s_002_on.gif");
		mbtn_per_s_003_over = newImage("images/mbtn_per_s_003_on.gif");
		mbtn_per_s_004_over = newImage("images/mbtn_per_s_004_on.gif");

		mbtn_pro_s_001_over = newImage("images/mbtn_pro_s_001_on.gif");
		mbtn_pro_s_002_over = newImage("images/mbtn_pro_s_002_on.gif");
		mbtn_pro_s_003_over = newImage("images/mbtn_pro_s_003_on.gif");
		mbtn_pro_s_004_over = newImage("images/mbtn_pro_s_004_on.gif");


		preloadFlag = true;
	}
}