rework of "bugfix: #1830 "Type" dropdown field/box missing with non-project mode""

Author: emergie

web/js/utils-0.0.19.js

@@ -1318,16 +1318,20 @@ function init_results_autohide() {
 
 function init_searchable_option_list() {
     function init_sol_on_type_combobox() {
+        var $type = $('#type');
+        if ($type.length === 0) {
+            return;
+        }
         /**
          * Has to be here because otherwise the offset()
          * takes the original long <select> box and the max-height
          * does not work then.
          */
-        $('#type').searchableOptionList({
+        $type.searchableOptionList({
             texts: {
                 searchplaceholder: 'Click here to restrict the file type'
             },
-            maxHeight: $('#type').offset().top + 'px',
+            maxHeight: $type.offset().top + 'px',
             /**
              * Defined in menu.jsp just next to the original <select>
              */