Index: trunk/kernel/include/category.php
===================================================================
diff -u -r470 -r495
--- trunk/kernel/include/category.php	(.../category.php)	(revision 470)
+++ trunk/kernel/include/category.php	(.../category.php)	(revision 495)
@@ -1022,6 +1022,26 @@
                */           
                 $ret = $this->ItemCount();               
             break;
+            
+            case 'modified':
+            	$ret = '';
+            	$date = $this->Get('Modified');
+            	if( $element->GetAttributeByName('_tz') )
+            	{
+            		$date = GetLocalTime($date,$objSession->Get("tz"));
+            	}
+
+            	$part = strtolower($element->GetAttributeByName('_part') );
+            	if(strlen($part))
+            	{
+            		$ret = ExtractDatePart($part,$date);
+            	}
+            	else
+            	{
+            		$ret = ($date <= 0) ? '' : LangDate($date);
+            	}
+            	break;
+            
             case "itemdate":
             	/*
             	@field:cat.itemdate
@@ -1300,18 +1320,35 @@
         return $res;
     }
 
-  	function UpdateCacheCounts()
+    function UpdateCacheCounts()
     {
-  	  global $objItemTypes;
-  	
-  	  $CatId = $this->Get("CategoryId");
-  	  
-  	  if($CatId>0)
-  	  {  	  
-  	  	//echo "Updating count for ".$this->Get("CachedNavbar")."<br>\n";
-  		UpdateCategoryCount(0,$CatId); 	  		  
-  	  }
-    }  	
+    	global $objItemTypes;
+
+    	$CatId = $this->Get("CategoryId");
+
+    	if($CatId>0)
+    	{
+    		//echo "Updating count for ".$this->Get("CachedNavbar")."<br>\n";
+    		UpdateCategoryCount(0,$CatId);
+    	}
+    }
+    
+    /**
+    * @return void
+    * @param int $date
+    * @desc Set Modified field for category & all it's parent categories
+    */
+    function SetLastUpdate($date)
+    {
+    	$parents = $this->Get('ParentPath');
+    	$parents = substr($parents, 1, strlen($parents) - 2 );
+    	$parents = explode('|', $parents);
+    	
+    	$db =& GetADODBConnection();
+    	$sql = 'UPDATE '.$this->tablename.' SET Modified = '.$date.' WHERE CategoryId IN ('.implode(',', $parents).')';
+    	$db->Execute($sql);
+    }
+    
       
 }