function full_screen(URL) {
	var sep = (URL.indexOf("?") >= 0) ? "&" : "?";
	window.open(URL + sep + "w=" + screen.width + "&h=" + screen.height,"","fullscreen,scrollbars=no");
}
function description(URL) {
	window.open(URL, 'description', 'width=430,height=260,location=no,menubar=no,directories=no,toolbar=no,scrollbars=no,resizable=yes,status=no');
}