function set_images_event(){
	obj = document.images;
	if ( obj && obj.length > 0 )
		for ( i = 0; i < obj.length; ++ i )
			if ( obj[ i ].title == 'interlock' )
				obj[ i ].onmousedown = function (){ if ( event.button == 2 ){ alert( "© Vela Piena Fotografia, ALL RIGHTS RESERVED" );}}
}