require_once( '../functions/page_header.php' );
+/* If a user opens a new session then comes back to this one,
+ * $base_uri isn't set because it the session is invalid.
+ */
+
+if (! isset($base_uri)) {
+ ereg ('(^.*/)[^/]+/[^/]+$', $PHP_SELF, $regs);
+ $base_uri = $regs[1];
+}
+
function is_logged_in () {
global $squirrelmail_language, $frame_top, $base_uri;