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;

// initialize global variables
var detectableWithVB = false;
var pluginFound = false;


function redirectCheck(pluginFound, redirectURL, redirectIfFound, conFlash) {
    // check for redirection
    if( redirectURL && ((pluginFound && redirectIfFound) || 
	(!pluginFound && !redirectIfFound)) ) {
	// go away
	goURL(redirectURL);
	return pluginFound;
    } else {
	// stay here and return result of plugin detection
	return pluginFound;
    }
}

function canDetectPlugins() {
    if( detectableWithVB || (navigator.plugins && navigator.plugins.length > 0) ) {
	return true;
    } else {
	return false;
    }
}

function detectQuickTime(redirectURL, redirectIfFound) {
    pluginFound = detectPlugin('QuickTime');
    // if not found, try to detect with VisualBasic
    if(!pluginFound && detectableWithVB) {
	pluginFound = detectQuickTimeActiveXControl();
    }
	
	return pluginFound
	//with redirect
    //return redirectCheck(pluginFound, redirectURL, redirectIfFound);
}

function detectFlash(redirectURL, redirectIfFound) {
    pluginFound = detectPlugin('Shockwave','Flash'); 
    // if not found, try to detect with VisualBasic
    if(!pluginFound && detectableWithVB) {
	pluginFound = detectActiveXControl('ShockwaveFlash.ShockwaveFlash.1');
    }
    // check for redirection
	return pluginFound
}

function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision) 
{
 	reqVer = parseFloat(reqMajorVer + "." + reqRevision);
   	// loop backwards through the versions until we find the newest version	
	for (i=25;i>0;i--) {	
		if (isIE && isWin && !isOpera) {
			versionStr = VBGetSwfVer(i);
		} else {
			versionStr = JSGetSwfVer(i);		
		}

		if (versionStr == -1 ) { 
			return false;
		} else if (versionStr != 0) {
			if(isIE && isWin && !isOpera) {
				tempArray         = versionStr.split(" ");
				tempString        = tempArray[1];
				versionArray      = tempString .split(",");				
			} else {
				versionArray      = versionStr.split(".");
			}
			versionMajor      = versionArray[0];
			versionMinor      = versionArray[1];
			versionRevision   = versionArray[2];
			
			versionString     = versionMajor + "." + versionRevision;   // 7.0r24 == 7.24
			versionNum        = parseFloat(versionString);

			//kamijo-san revision
			if (versionMajor == reqMajorVer) {
			   if (versionMinor == reqMinorVer) {
			      return (versionRevision >= reqRevision);
			   } else {
			      return (versionMinor > reqMinorVer);
			   }
			} else {
			   return (versionMajor > reqMajorVer);
			}
		}
	}	
}

function JSGetSwfVer(i){
	// NS/Opera version >= 3 check for Flash plugin in plugin array
	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;
			descArray = flashDescription.split(" ");
			tempArrayMajor = descArray[2].split(".");
			versionMajor = tempArrayMajor[0];
			versionMinor = tempArrayMajor[1];
			if ( descArray[3] != "" ) {
				tempArrayMinor = descArray[3].split("r");
			} else {
				tempArrayMinor = descArray[4].split("r");
			}
      		versionRevision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0;
            flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
      	} else {
			flashVer = -1;
		}
	}
	// 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;
	// Can't detect in all other cases
	else {
		flashVer = -1;
	}
	return flashVer;
	//return redirectCheck(pluginFound, redirectURL, redirectIfFound);
} 

function detectPlugin() {
	// allow for multiple checks in a single pass
	var daPlugins = detectPlugin.arguments;
	// consider pluginFound to be false until proven true
	var pluginFound = false;
	// if plugins array is there and not fake
	if (navigator.plugins && navigator.plugins.length > 0) {
		var pluginsArrayLength = navigator.plugins.length;
		// for each plugin...
		for (pluginsArrayCounter=0; pluginsArrayCounter < pluginsArrayLength; pluginsArrayCounter++ ) {
		    // loop through all desired names and check each against the current plugin name
		    var numFound = 0;
		    for(namesCounter=0; namesCounter < daPlugins.length; namesCounter++) {
			// if desired plugin name is found in either plugin name or description
			if( (navigator.plugins[pluginsArrayCounter].name.indexOf(daPlugins[namesCounter]) >= 0) || 
				(navigator.plugins[pluginsArrayCounter].description.indexOf(daPlugins[namesCounter]) >= 0) ) {
				// this name was found
				numFound++;
			}   
		    }
		    // now that we have checked all the required names against this one plugin,
		    // if the number we found matches the total number provided then we were successful
		    if(numFound == daPlugins.length) {
			pluginFound = true;
			// if we've found the plugin, we can stop looking through at the rest of the plugins
			break;
		    }
		}
	    }
	return pluginFound;
} // detectPlugin


// Here we write out the VBScript block for MSIE Windows
if (isIE && isWin) {
	document.writeln('<script language="VBscript">');
	
	document.writeln('\'do a one-time test for a version of VBScript that can handle this code');
	document.writeln('detectableWithVB = False');
	document.writeln('If ScriptEngineMajorVersion >= 2 then');
	document.writeln('  detectableWithVB = True');
	document.writeln('End If');
	
	document.writeln('\'this next function will detect most plugins');
	document.writeln('Function detectActiveXControl(activeXControlName)');
	document.writeln('  on error resume next');
	document.writeln('  detectActiveXControl = False');
	document.writeln('  If detectableWithVB Then');
	document.writeln('     detectActiveXControl = IsObject(CreateObject(activeXControlName))');
	document.writeln('  End If');
	document.writeln('End Function');
	
	document.writeln('\'and the following function handles QuickTime');
	document.writeln('Function detectQuickTimeActiveXControl()');
	document.writeln('  on error resume next');
	document.writeln('  detectQuickTimeActiveXControl = False');
	document.writeln('  If detectableWithVB Then');
	document.writeln('    detectQuickTimeActiveXControl = False');
	document.writeln('    hasQuickTimeChecker = false');
	document.writeln('    Set hasQuickTimeChecker = CreateObject("QuickTimeCheckObject.QuickTimeCheck.1")');
	document.writeln('    If IsObject(hasQuickTimeChecker) Then');
	document.writeln('      If hasQuickTimeChecker.IsQuickTimeAvailable(0) Then ');
	document.writeln('        detectQuickTimeActiveXControl = True');
	document.writeln('      End If');
	document.writeln('    End If');
	document.writeln('  End If');
	document.writeln('End Function');
	
	document.writeln('Function VBGetSwfVer(i)');
	document.writeln('  on error resume next');
	document.writeln('  Dim swControl, swVersion');
	document.writeln('  swVersion = 0');
	  
	document.writeln('  set swControl = CreateObject("ShockwaveFlash.ShockwaveFlash." + CStr(i))');
	document.writeln('  if (IsObject(swControl)) then');
	document.writeln('    swVersion = swControl.GetVariable("$version")');
	document.writeln('  end if');
	document.writeln('  VBGetSwfVer = swVersion');
	document.writeln('End Function');
	
	document.writeln('</scr' + 'ipt>');
}
if(canDetectPlugins()) {
	pluginsCheck = true;
	//
	qTpcheck = detectQuickTime();
	fPpcheck = detectFlash();
	if(fPpcheck == true){
		fP7pcheck = DetectFlashVer(7, 0, 0);
		fP8pcheck = DetectFlashVer(8, 0, 0);
	} else {
		fP7pcheck = false;
		fP8pcheck = false;
		
	}
} else {
	pluginsCheck = false;
}