Event.observe('link13751', 'click', function(event){
  if (confirm('¿Está seguro?')) {
    var element = Event.findElement(event,'TR');
    new Ajax.Updater('message', '/web/itescam/admin/technical_articles/delete/86',
      { asynchronous:true, evalScripts:true,
        onComplete:function(request){ element.remove() },
        requestHeaders:['X-Update', 'message']
      });
  } else Event.stop(event);
});