Index: relativity_views.inc
===================================================================
--- relativity_views.inc	(revision 117)
+++ relativity_views.inc	(working copy)
@@ -108,6 +108,7 @@
 
 function views_handler_filter_relativity_parent_zero() {
   $parents = array();
+  $parents['***CURRENT_NID***'] = t('Current node');
   $result = db_query("SELECT DISTINCT parent_nid FROM {relativity} ORDER BY parent_nid");
   while ($obj = db_fetch_object($result)) {
     $node = node_load($obj->parent_nid);
@@ -115,3 +116,12 @@
   }
   return $parents;
 }
+
+function relativity_views_query_substitutions($view) {
+  if (arg(0) == 'node' && is_numeric(arg(1))) {
+    $nodeid = arg(1);
+  } else {
+    $nodeid = -1;
+  }  
+  return array('***CURRENT_NID***' => $nodeid);
+}