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

function goURL(daURL) {
    // if the browser can do it, use replace to preserve back button
    if(javascriptVersion1_1) {
	window.location.replace(daURL);
    } else {
	window.location = daURL;
    }
    return;
}

function redirectCheck(pluginFound, redirectURL, redirectIfFound) {
    // 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 detectIOS() {
	fStatus = false;
	if (jQuery.browser.webkit) {
		fIpad = navigator.userAgent.indexOf('iPad');
		fIphone = navigator.userAgent.indexOf('iPhone');
		if (fIpad > -1 || fIphone > -1) {
			fStatus = true;
		}
	}
	
	return fStatus;
}

function detectPrimaryMediaPlugin() {
	fStatus = false;
	fResult = '';
	
	if (detectIOS()) {
		fStatus = true;
		// swf = flowplayer - (Flowplayer will use the iPad plugin)
		fResult = 'swf';
	}
	
	if (fStatus == false) {
		if (detectFlash()) {
			fStatus = true;
			fResult = 'swf';
		}
	}

	if (fStatus == false) {
		if (detectQuickTime()) {
			fStatus = true;
			fResult = 'qt';
		}
	}
	/*
	if (fStatus == false) {
		if (detectWindowsMedia()) {
			fStatus = true;
			fResult = 'wm';
		}
	}
	*/
		
	if (fStatus == false) {
		//alert('Sorry, we could not detect any viable media players installed on your computer.\n\nPlease make sure you have atleast one of the following installed:\n\n- Flash\n- Quicktime');
	}
	return fResult;
}

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

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

function detectReal() {
    pluginFound = detectPlugin('RealPlayer');
    // if not found, try to detect with VisualBasic
    if(!pluginFound && detectableWithVB) {
		pluginFound = (detectActiveXControl('rmocx.RealPlayer G2 Control') ||
			       detectActiveXControl('RealPlayer.RealPlayer(tm) ActiveX Control (32-bit)') ||
			       detectActiveXControl('RealVideo.RealVideo(tm) ActiveX Control (32-bit)'));
    }	
    return pluginFound;
}

function detectWindowsMedia() {
    pluginFound = detectPlugin('Windows Media');
    // if not found, try to detect with VisualBasic
    if(!pluginFound && detectableWithVB) {
		pluginFound = detectActiveXControl('MediaPlayer.MediaPlayer.1');
    }
    return pluginFound;
}

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 ((navigator.userAgent.indexOf('MSIE') != -1) && (navigator.userAgent.indexOf('Win') != -1)) {
    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('</scr' + 'ipt>');
}