if ( typeof( wtl_lang ) != 'string' ) wtl_lang = 'en';
if ( typeof( wtl_day ) != 'number' ) wtl_day = '';
if ( typeof( wtl_month ) != 'number' ) wtl_month = '';
if ( typeof( wtl_year ) != 'number' ) wtl_year = '';
if ( typeof( wtl_width ) != 'number' ) wtl_width = 600;
if ( typeof( wtl_height ) != 'number' ) wtl_height = 400;
if ( typeof( wtl_source ) != 'string' ) wtl_source = 'history';
if ( typeof( wtl_row_height ) != 'number' ) wtl_row_height = 0;

document.write(' <iframe src="http://www.wikiwix.com/itimeline.php?source='+wtl_source+
       '&lang='+wtl_lang+
       '&day='+wtl_day+
       '&month='+wtl_month+
       '&year='+wtl_year+
       '&rowheight='+wtl_row_height+
       '&height='+wtl_height+
       '" width="'+wtl_width+'px" height="'+wtl_height+'px" scrolling="no" frameborder="1" ></iframe>');