// Adapted from http://developer.apple.com/internet/webcontent/examples/detectallplugins.shtml

// Use the following boolean functions to detect various plugins
//  canDetectPlugins()
//  detectDirector()
//  detectFlash()
//      detectQuickTime()
//      detectReal()
//      detectWindowsMedia()

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

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

function detectplug(type) {
    if (type == 'QuickTime') {
        return detectQuickTime();
    }
    else if (type == 'RealPlayer') {
        return detectReal();
    }
    else if (type == 'WindowsMedia') {
        return detectWindowsMedia();
    }
    else {
        return false;
    }
}

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

function detectReal(redirectURL, redirectIfFound) {
    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(redirectURL, redirectIfFound) {
    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


// Include VBScript routines for MSIE Windows
//if (0 && (navigator.userAgent.indexOf('MSIE') != -1) && (navigator.userAgent.indexOf('Win') != -1) && document.getElementsByTagName) {
//    var html_doc = document.getElementsByTagName('head').item(0);
//    var js = document.createElement('script');
//    js.setAttribute('language', 'VBscript');
//    js.setAttribute('type', 'text/vbscript');
//    js.setAttribute('src', '/js/plugindetect.vbs');
//    html_doc.appendChild(js);
//}