//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/style_pc_ie_video.css" media="screen">');
  document.write('<link rel="stylesheet" type="text/css" href="codice/style_pc_ie_stampa.css" media="print">');
 } else {
  document.write('<link rel="stylesheet" type="text/css" href="codice/style_pc_ie_video.css" media="screen">');
  document.write('<link rel="stylesheet" type="text/css" href="codice/style_pc_ie_stampa.css" media="print">');
 }
} else {
 if(navigator.platform == "Win32") {
  document.write('<link rel="stylesheet" type="text/css" href="codice/style_pc_ie_video.css" media="screen">');
  document.write('<link rel="stylesheet" type="text/css" href="codice/style_pc_ie_stampa.css" media="print">');
 } else {
  document.write('<link rel="stylesheet" type="text/css" href="codice/style_pc_ie_video.css" media="screen">');
  document.write('<link rel="stylesheet" type="text/css" href="codice/style_pc_ie_stampa.css" media="print">');
 }
}