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function isDefined(property) {

  return (typeof property != 'undefined');

}



var flashVersion = 0;

function getFlashVersion() {

	var latestFlashVersion = 8;

   var agent = navigator.userAgent.toLowerCase(); 

	

   if (agent.indexOf("mozilla/3") != -1 && agent.indexOf("msie") == -1) {

      flashVersion = 0;

   }

   

	if (navigator.plugins != null && navigator.plugins.length > 0) {

		var flashPlugin = navigator.plugins['Shockwave Flash'];

		if (typeof flashPlugin == 'object') { 

			for (var i = latestFlashVersion; i >= 3; i--) {

            if (flashPlugin.description.indexOf(i + '.') != -1) {

               flashVersion = i;

               break;

            }

         }

		}

	}



	else if (agent.indexOf("msie") != -1 && parseInt(navigator.appVersion) >= 4 && agent.indexOf("win")!=-1 && agent.indexOf("16bit")==-1) {

	   var doc = '<scr' + 'ipt language="VBScript"\> \n';

      doc += 'On Error Resume Next \n';

      doc += 'Dim obFlash \n';

      doc += 'For i = ' + latestFlashVersion + ' To 3 Step -1 \n';

      doc += '   Set obFlash = CreateObject("ShockwaveFlash.ShockwaveFlash." & i) \n';

      doc += '   If IsObject(obFlash) Then \n';

      doc += '      flashVersion = i \n';

      doc += '      Exit For \n';

      doc += '   End If \n';

      doc += 'Next \n';

      doc += '</scr' + 'ipt\> \n';

      document.write(doc);

   }

		

	else if (agent.indexOf("webtv/2.5") != -1) flashVersion = 3;



	else if (agent.indexOf("webtv") != -1) flashVersion = 2;



	else {

		flashVersion = flashVersion_DONTKNOW;

	}



	return flashVersion;

}



flashVersion_DONTKNOW = -1;