--- loncom/interface/coursecatalog.pm	2011/10/03 01:35:46	1.58.4.8
+++ loncom/interface/coursecatalog.pm	2013/11/21 16:34:23	1.58.4.9
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler for displaying the course catalog interface
 #
-# $Id: coursecatalog.pm,v 1.58.4.8 2011/10/03 01:35:46 raeburn Exp $
+# $Id: coursecatalog.pm,v 1.58.4.9 2013/11/21 16:34:23 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -66,13 +66,20 @@ sub handler {
     }
     my $formname = 'coursecatalog';
     if ($env{'form.showdom'} ne '') {
+        $env{'form.showdom'} = &LONCAPA::clean_domain($env{'form.showdom'});
         if (&Apache::lonnet::domain($env{'form.showdom'}) ne '') {
             $codedom = $env{'form.showdom'};
+        } else {
+            $env{'form.showdom'} = '';
         }
     }
     my $domdesc = &Apache::lonnet::domain($codedom,'description');
     &Apache::lonhtmlcommon::clear_breadcrumbs();
 
+    if ($env{'form.catalog_maxdepth'} ne '') {
+        $env{'form.catalog_maxdepth'} =~ s{\D}{}g;
+    }
+
     my %domconfig =
         &Apache::lonnet::get_dom('configuration',['coursecategories'],$codedom);
     my (@cats,@trails,%allitems,%idx,@jsarray,%subcathash,$cathash);