function delete_directory_thumb(i) {

	var handlerFunc = function(t) {

		var xmlDoc = t.responseXML;
		if (document.all) var noeud = xmlDoc.childNodes[1].nodeName;
		else var noeud = xmlDoc.childNodes[0].nodeName;

		if (noeud == 'del_thumb') {
			refresh_directory_thumb();
		}
	}
	new Ajax.Request('/' + LANG + '/ajax/directory/del_thumb.php', { method:'post', postBody:'i=' + i, onSuccess:handlerFunc});
}

function refresh_directory_thumb() {
	$('directory_image_div').innerHTML = '';
}