var AcrobatTested = 0;
var IsAcrobat = 0;

var startTagFix = '</';
var msie_windows = 0;
if ((navigator.userAgent.indexOf('MSIE') != -1) && (navigator.userAgent.indexOf('Win') != -1)){
  msie_windows = 1;
  document.writeln('<script language="VBscript">');
  document.writeln('Dim detect_through_vb');
  document.writeln('detect_through_vb = 0');
  document.writeln('If ScriptEngineMajorVersion >= 2 then');
  document.writeln('  detect_through_vb = 1');
  document.writeln('End If');
  document.writeln('Function activeXDetect(activeXname)');
  document.writeln('  on error resume next');
  document.writeln('  If ScriptEngineMajorVersion >= 2 then');
  document.writeln('     activeXDetect = False');
  document.writeln('     activeXDetect = IsObject(CreateObject(activeXname))');
  document.writeln('     If (err) then');
  document.writeln('        activeXDetect = False');
  document.writeln('     End If');
  document.writeln('   Else');
  document.writeln('     activeXDetect = False');
  document.writeln('   End If');
  document.writeln('End Function');
  document.writeln(startTagFix+'script>');
}

function pluginDetect(plugindescription, pluginxtension, pluginmime, activeXname){

  var i,plugin_undetectable=0,detected=0, daPlugin=new Object();

  if (msie_windows && detect_through_vb){
      plugin_undetectable = 0;
  } else {
      plugin_undetectable = 1;
  }


  if(navigator.plugins) {
      numPlugins = navigator.plugins.length;
      if (numPlugins > 1) {
	  if (navigator.mimeTypes && navigator.mimeTypes[pluginmime] && navigator.mimeTypes[pluginmime].enabledPlugin && (navigator.mimeTypes[pluginmime].suffixes.indexOf(pluginxtension) != -1)) { // seems like we have it, let's just make sure and check the version (if specified)
	      if ((navigator.appName == 'Netscape') && (navigator.appVersion.indexOf('4.0') != -1)) { // Netscape can't handle the references to navigator.plugins by number, sooo...
		  for(i in navigator.plugins) {
		      if ((navigator.plugins[i].description.indexOf(plugindescription) != -1) || (i.indexOf(plugindescription) != -1)) { // some versions of quicktime have no description. feh!
			  detected=1;
			  break;
		      }
		  }
	      } else {
		  for (i = 0; i < numPlugins; i++) {
		      daPlugin = navigator.plugins[i];
		      if ((daPlugin.description.indexOf(plugindescription) != -1) || (daPlugin.name.indexOf(plugindescription) != -1)) {
			  detected=1;
			  break;
		      }
		  }
	      }

      if (navigator.mimeTypes[pluginmime] == null) {
		  detected = 0;
	      }
	  }
	  return detected;
      } else if((msie_windows == 1) && !plugin_undetectable){
	  return activeXDetect(activeXname);
      } else { 		
	  return 0;
      }
  } else {
      return 0;
  }
}


function easyDetect(whichPlugin) {

    var isItThere = 0;
    if( (whichPlugin == 'flash') ) {
	isItThere = pluginDetect('Flash', 'swf', 'application/x-shockwave-flash', 'ShockwaveFlash.ShockwaveFlash');
    } else if( (whichPlugin == 'director') ) {
	isItThere = pluginDetect('Shockwave', 'dcr', 'application/x-director', 'SWCtl.SWCtl.1');
    } else if( (whichPlugin == 'quicktime') ) {
	isItThere = pluginDetect('QuickTime', 'mov', 'video/quicktime', '');
    } else if( (whichPlugin == 'realaudio') ) {
	isItThere = (pluginDetect('RealPlayer', 'rpm', 'audio/x-pn-realaudio-plugin', 'RealPlayer.RealPlayer(tm) ActiveX Control (32-bit)')) || (pluginDetect('RealPlayer', 'rpm', 'audio/x-pn-realaudio-plugin','rmocx.RealPlayer G2 Control')) || (pluginDetect('RealPlayer', 'rpm', 'audio/x-pn-realaudio-plugin','RealPlayer.RealPlayer(tm) ActiveX Control (32-bit)')) || (pluginDetect('RealPlayer', 'rpm', 'audio/x-pn-realaudio-plugin','RealVideo.RealVideo(tm) ActiveX Control (32-bit)'))
    } else if( (whichPlugin == 'acrobat') ) {
	isItThere = (pluginDetect('Acrobat', 'pdf', 'application/pdf', 'Pdf.PdfCtrl.1'))
    }

    return isItThere;
}



function checkBrowser() {
  return navigator.userAgent.indexOf('MSIE')

}
    

function ChkAcrobat() {

if (AcrobatTested == 0) {
 IsAcrobat = easyDetect('flash');
 AcrobatTested = 1;
}

  if(IsAcrobat) {
   	return true;
  } else {
   //if (confirm("Per ascoltare il sottofondo musicale di questo sito\noccorre avere installato il plugin Schockwave Flash.\nVuoi scaricare il programma?")) {
    // Acrobat = window.open("http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash","FlashDownload");
	 //}
  return false;
  }
}