function showdetails(id) {

	descr = document.getElementById(id + '_more');
	elem = document.getElementById(id + '_btn');
	if (descr.style.display != 'block') {
		elem.src = 'lan_img/m.gif';
		descr.style.display = 'block';
	} else {
		elem.src = 'lan_img/p.gif';
		descr.style.display = 'none';
	}
	return false;
}