//PC and browser identificatio: MS Exlporer-Navigator & PC-MAC
if(!document.all) {	// Netscape
 if(navigator.platform == "Win32") {
  document.write('<link rel="stylesheet" type="text/css" href="codice/css_ns_video.css" media="screen">');
  document.write('<link rel="stylesheet" type="text/css" href="codice/css_stampa.css" media="print">');
 } else {
  document.write('<link rel="stylesheet" type="text/css" href="codice/css_ns_video.css" media="screen">');
  document.write('<link rel="stylesheet" type="text/css" href="codice/css_stampa.css" media="print">');
 }
} else {
 if(navigator.platform == "Win32") {
  document.write('<link rel="stylesheet" type="text/css" href="codice/css_ie_video.css" media="screen">');
  document.write('<link rel="stylesheet" type="text/css" href="codice/css_stampa.css" media="print">');
 } else {
  document.write('<link rel="stylesheet" type="text/css" href="codice/css_ie_video.css" media="screen">');
  document.write('<link rel="stylesheet" type="text/css" href="codice/css_stampa.css" media="print">');
 }
}