function goPage(id_page, preview) {
	if (!preview) {
		preview = 'none';
	}
	if (id_page > -1) {
		document.location = '?page=thumbs&id_page=' + id_page + '&preview=' + preview;
	}
}

// used to switch languages
function selLanguage(which) {
	document.location = '/lang/' + which.value;
}