function animazione_flash() {

      document.write("<object type='application/x-shockwave-flash' data='intro.swf' width='900' height='450' id='filmato'> ");
      document.write("<param name='movie' value='intro.swf' /> ");
      document.write("<param name='quality' value='high' /><param name='wmode' value='transparent'/> ");
      document.write("</object> ");

}