diff --git a/stages/static/js/attribution.js b/stages/static/js/attribution.js
index 4fa78b2..2140ea1 100644
--- a/stages/static/js/attribution.js
+++ b/stages/static/js/attribution.js
@@ -1,4 +1,5 @@
 function update_periods(section_id) {
+  if (!section_id) return;
   $.getJSON('/section/' + section_id + '/periods/', function(data) {
     var sel = $('#period_select');
     sel.append($("<option />").val('').text('-------'));
@@ -78,7 +79,7 @@ function update_trainings(period_id) {
       if ($('ul#training_list').children().length > 0)
         $('input#export').show();
       else $('input#export').hide();
-      if ($('#corp_select').attr('options').length > 0)
+      if ($('#corp_select option').length > 0)
         $('input#export_non_attr').show();
       else $('input#export_non_attr').hide();
   }
diff --git a/templates/attribution.html b/templates/attribution.html
index 693e456..586443f 100644
--- a/templates/attribution.html
+++ b/templates/attribution.html
@@ -8,10 +8,10 @@
   select#period_select { width: 16em; }
 
   div#student_choice { float: left; width: 18%; }
-  select#student_select, select#student_filter { width: 100%; }
+  select#student_select, select#student_filter { width: 100%; height: auto; }
 
   div#corp_choice { float: right; width: 18%; }
-  select#corp_select, select#corp_filter { width: 100%; }
+  select#corp_select, select#corp_filter { width: 100%; height: auto; }
 
   div#student_detail { float:left; width: 40%; margin: 1em; padding: 0.5em; border: 3px solid red; min-height: 4em; border-radius: 8px; }
   div#previous_stages { background-color: #EEE; border-radius: 4px; }