--- web/zm_html_view_timeline.php.old	2008-02-25 10:49:53.000000000 +0100
+++ web/zm_html_view_timeline.php	2008-08-23 22:11:15.999830110 +0200
@@ -62,6 +62,10 @@
 // Turn error reporting on full temporarily.
 error_reporting( E_ALL );
 
+if ( !isset($filter_query) )
+	$filter_query = "";
+
+
 $mouseover = true;
 if ( !isset($mouseover) )
 	$mouseover = true;