function activate(image_name) {
	if (document.images) {
		document[image_name].src = eval(image_name + "On.src");
	}
}

function deactivate(image_name) {
	if (document.images) {
		document[image_name].src = eval(image_name + "Off.src");
	}
}

function popupwindow(page) {
	var second = "width=" + (550) + ",height=" + (550) + ",location=no,toolbar=no,directories=no,status=no,scrollbars=yes,resize=yes,menubar=no";
	var app = window.open(page,'window',second);
	app.opener = window.parent; 
	app.opener.name = "opener";
}