diff --git a/htdocs/lib/files.lib.php b/htdocs/lib/files.lib.php
new file mode 100644
index 00000000000..a46ef8d88bc
--- /dev/null
+++ b/htdocs/lib/files.lib.php
@@ -0,0 +1,53 @@
+<?php
+/* Copyright (C) 2008 Laurent Destailleur  <eldy@users.sourceforge.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * or see http://www.gnu.org/
+ */
+
+/**
+   \file		htdocs/lib/files.lib.php
+   \brief		Library for file managing functions
+   \version		$Id$
+*/
+
+function dol_compare_file($a, $b)
+{
+	global $sortorder;
+	global $sortfield;
+	
+	$sortorder=strtoupper($sortorder);
+	
+	if ($sortorder == 'ASC') { $retup=-1; $retdown=1; }
+	else { $retup=1; $retdown=-1; }
+	
+	if ($sortfield == 'name')
+	{
+		if ($a->name == $b->name) return 0;
+		return ($a->name < $b->name) ? $retup : $retdown;
+	}
+	if ($sortfield == 'date')
+	{
+		if ($a->date == $b->date) return 0;
+		return ($a->date < $b->date) ? $retup : $retdown;
+	}
+	if ($sortfield == 'size')
+	{
+		if ($a->size == $b->size) return 0;
+		return ($a->size < $b->size) ? $retup : $retdown;
+	}
+}
+
+?>