var cabecera_flash;
window.addEvent('domready', function(){
                              cabecera_flash = new Swiff('swf/banner.swf', {
                                  id: 'cabecera_flash',
                                  width: 950,
                                  height: 210,
                                  container: 'head',
                                  params: {
                                    quality: 'high',
                                    wmode: 'opaque'
                                  },
                                  vars: {
                                    usuario: false,                                    seccion: "inicio"                                  }
                              });
});