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) {
		local_mizo_over = newImage("../img/campas/local_mizo_over.gif");
		local_location_over = newImage("../img/campas/local_location_over.gif");
		local_club_over = newImage("../img/campas/local_club_over.gif");
		local_dormitory_over = newImage("../img/campas/local_dormitory_over.gif");
		local_outline_over = newImage("../img/campas/local_outline_over.gif");

		var the_images = new Array('../img/pull_bg.gif', '../img/pull_bg_sub.gif');

		preloadFlag = true;
	}
}