function toggle(id) {
	var elem = document.getElementById(id);
		if (elem.style.display == "none") {
			elem.style.display = "block";
			document.getElementById(id + 'img').src='media/tpl/expand-minus.gif';
			}
			else {
				elem.style.display = "none";
				document.getElementById(id + 'img').src='media/tpl/expand-plus.gif';
			}
}