Index: trunk/core/units/categories/categories_tag_processor.php
===================================================================
diff -u -N -r5024 -r5036
--- trunk/core/units/categories/categories_tag_processor.php	(.../categories_tag_processor.php)	(revision 5024)
+++ trunk/core/units/categories/categories_tag_processor.php	(.../categories_tag_processor.php)	(revision 5036)
@@ -306,6 +306,21 @@
 		$this->Application->SetVar('m_cat_id', $category_id);
 		$this->Application->Session->SaveLastTemplate($params['template']);
 	}
+	
+	function GetParentCategory($params)
+	{
+		$parent_id = 0;
+		$id_field = $this->Application->getUnitOption($this->Prefix, 'IDField');
+		$table = $this->Application->getUnitOption($this->Prefix,'TableName');
+		$cat_id = $this->Application->GetVar('m_cat_id');
+		if ($cat_id > 0) {
+			$sql = 'SELECT ParentId
+					FROM '.$table.'
+					WHERE '.$id_field.' = '.$cat_id;
+			$parent_id = $this->Conn->GetOne($sql);
+		}
+		return $parent_id;
+	}
 }