--- filter.pl	2003/12/15 01:00:13	1.4
+++ filter.pl	2004/01/17 16:21:11	1.5
@@ -29,7 +29,7 @@
 	$mode .= "_";
 
 	my $view;
-	if ($href =~ m/view=([^&]+)&/) {
+	if ($isbn =~ m/_index$/ && $href =~ m/view=([^&]+)&/) {
 		$isbn .= "_".$1;
 	}