Index: trunk/kernel/include/item.php
===================================================================
diff -u -r3122 -r3145
--- trunk/kernel/include/item.php	(.../item.php)	(revision 3122)
+++ trunk/kernel/include/item.php	(.../item.php)	(revision 3145)
@@ -20,6 +20,8 @@
 	var $ReviewSortOrder;
 	var $ReviewPerPageVar;
 
+	var $TitleField = '';
+	
 	function clsItem($FullItem=FALSE)
 	{
 		$this->clsParsedItem();
@@ -1106,6 +1108,33 @@
 		$sql = 'SELECT ParentId FROM '.$prefix.'Category WHERE CategoryId = '.$cat_id;
 		if($cat_id > 0) $this->refreshLastUpdate( $db->GetOne($sql) );
 	}
+	
+	function StripDisallowed($string)
+	{
+		$not_allowed = Array(' ', '\\', '/', ':', '*', '?', '"', '<', '>', '|');
+		$string = str_replace($not_allowed, '_', $string);
+		return preg_replace('/(_+)/', '_', $string);
+	}
 
+	function GenerateFilename()
+	{
+		if ( !$this->Get('AutomaticFilename') && $this->Get('Filename') ) return false;
+		$name = $this->StripDisallowed( $this->Get($this->TitleField) );
+		if ( $name != $this->Get('Filename') ) $this->Set('Filename', $name);
+	}
+     
+	function Update($UpdatedBy = null)
+    {
+        $this->GenerateFilename();
+    	parent::Update($UpdatedBy);
+    
+    }
+
+    function Create()
+    {
+    	$this->GenerateFilename();
+        parent::Create();
+    }
+
 }
 ?>
\ No newline at end of file