var preloadFlag = false;

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 myimages=new Array()
function preloadimages()	{
	for (i=0;i<preloadimages.arguments.length;i++) {
		myimages[i]=new Image()
		myimages[i].src=preloadimages.arguments[i]
	}
	preloadFlag = true;
}

preloadimages(	"/images/menu/menu_02_off.jpg",
				"/images/menu/menu_02_on.jpg",
				"/images/menu/menu_03_off.jpg",
				"/images/menu/menu_03_on.jpg",
				"/images/menu/menu_04_off.jpg",
				"/images/menu/menu_04_on.jpg",
				"/images/menu/menu_05_off.jpg",
				"/images/menu/menu_05_on.jpg",
				"/images/other/blank.gif" );