var isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;

function ControlVersion()
{
 var version;
 var axo;
 var e;

 // NOTE : new ActiveXObject(strFoo) throws an exception if strFoo isn't in the registry

 try {
  // version will be set for 7.X or greater players
  axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
  version = axo.GetVariable("$version");
 } catch (e) {
 }

 if (!version)
 {
  try {
   // version will be set for 6.X players only
   axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");

   // installed player is some revision of 6.0
   // GetVariable("$version") crashes for versions 6.0.22 through 6.0.29,
   // so we have to be careful.

   // default to the first public version
   version = "WIN 6,0,21,0";

   // throws if AllowScripAccess does not exist (introduced in 6.0r47)
   axo.AllowScriptAccess = "always";

   // safe to call for 6.0r47 or greater
   version = axo.GetVariable("$version");

  } catch (e) {
  }
 }

 if (!version)
 {
  try {
   // version will be set for 4.X or 5.X player
   axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
   version = axo.GetVariable("$version");
  } catch (e) {
  }
 }

 if (!version)
 {
  try {
   // version will be set for 3.X player
   axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
   version = "WIN 3,0,18,0";
  } catch (e) {
  }
 }

 if (!version)
 {
  try {
   // version will be set for 2.X player
   axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
   version = "WIN 2,0,0,11";
  } catch (e) {
   version = -1;
  }
 }

 return version;
}

// JavaScript helper required to detect Flash Player PlugIn version information
function GetSwfVer(){
 // NS/Opera version >= 3 check for Flash plugin in plugin array
 var flashVer = -1;

 if (navigator.plugins != null && navigator.plugins.length > 0) {
  if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
   var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
   var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;
   var descArray = flashDescription.split(" ");
   var tempArrayMajor = descArray[2].split(".");
   var versionMajor = tempArrayMajor[0];
   var versionMinor = tempArrayMajor[1];
   if ( descArray[3] != "" ) {
    tempArrayMinor = descArray[3].split("r");
   } else {
    tempArrayMinor = descArray[4].split("r");
   }
   var versionRevision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0;
   var flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
  }
 }
 // MSN/WebTV 2.6 supports Flash 4
 else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1) flashVer = 4;
 // WebTV 2.5 supports Flash 3
 else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1) flashVer = 3;
 // older WebTV supports Flash 2
 else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1) flashVer = 2;
 else if ( isIE && isWin && !isOpera ) {
  flashVer = ControlVersion();
 }
 return flashVer;
}

// When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision)
{
 versionStr = GetSwfVer();
 if (versionStr == -1 ) {
  return false;
 } else if (versionStr != 0) {
  if(isIE && isWin && !isOpera) {
   // Given "WIN 2,0,0,11"
   tempArray         = versionStr.split(" ");  // ["WIN", "2,0,0,11"]
   tempString        = tempArray[1];   // "2,0,0,11"
   versionArray      = tempString.split(","); // ['2', '0', '0', '11']
  } else {
   versionArray      = versionStr.split(".");
  }
  var versionMajor      = versionArray[0];
  var versionMinor      = versionArray[1];
  var versionRevision   = versionArray[2];

         // is the major.revision >= requested major.revision AND the minor version >= requested minor
  if (versionMajor > parseFloat(reqMajorVer)) {
   return true;
  } else if (versionMajor == parseFloat(reqMajorVer)) {
   if (versionMinor > parseFloat(reqMinorVer))
    return true;
   else if (versionMinor == parseFloat(reqMinorVer)) {
    if (versionRevision >= parseFloat(reqRevision))
     return true;
   }
  }
  return false;
 }
}