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-rw-r--r--jquery_drawer.module4
1 files changed, 4 insertions, 0 deletions
diff --git a/jquery_drawer.module b/jquery_drawer.module
index 7013cdb..4668226 100644
--- a/jquery_drawer.module
+++ b/jquery_drawer.module
@@ -108,6 +108,10 @@ function jquery_drawer_check_empty($tid) {
function jquery_drawer_select_nodes($tid = NULL) {
static $cache = array();
+ if ($tid == NULL) {
+ return;
+ }
+
if (isset($cache[$tid])) {
$cache[$tid] = taxonomy_select_nodes(array($tid));
}