--- alx-src/branches/alx-web-070/index.php	2019/07/10 08:20:35	13244
+++ alx-src/branches/alx-web-070/index.php	2019/07/10 08:54:02	13245
@@ -25,9 +25,17 @@
 if(isset($_GET['s_krit']))
 {
 	$_SESSION['alx_sort_krit']=$_GET['s_krit'];
-	$_SESSION['alx_sort_onfirst']=0+$_GET['s_on'];
-	$_SESSION['alx_sort_loc']['DEAD']=$_GET['s_dead'];
-	foreach($locations as $l) $_SESSION['alx_sort_loc'][$l]=$_GET['s_'.$l];
+
+	if(isset($_GET['s_on'])) $_SESSION['alx_sort_onfirst']=0+$_GET['s_on'];
+	else $_SESSION['alx_sort_onfirst']=0+NULL;
+
+	if(isset($_GET['s_dead'])) $_SESSION['alx_sort_loc']['DEAD']=$_GET['s_dead'];
+	else $_SESSION['alx_sort_loc']['DEAD']=NULL;
+
+	foreach($locations as $l) {
+		if(isset($_GET['s_'.$l])) $_SESSION['alx_sort_loc'][$l]=$_GET['s_'.$l];
+		else $_SESSION['alx_sort_loc'][$l]=NULL;
+	}
 }
 
 function check_online($dat, $bla)