// Funciones:
//      canDetectPlugins();
//      detectDirector();
//      detectFlash();
//      detectQuickTime();
//      detectReal();
//      detectWindowsMedia();

//------------------------------------------------------------------------------
// 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 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
//------------------------------------------------------------------------------
function canDetectPlugins() {
    if( detectableWithVB || (navigator.plugins && navigator.plugins.length > 0) ) {
        return true;
    }
    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 redirectCheck(pluginFound, redirectURL, redirectIfFound);
}
//------------------------------------------------------------------------------
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 redirectCheck(pluginFound, redirectURL, redirectIfFound);
}
//------------------------------------------------------------------------------
function detectQuickTime(redirectURL, redirectIfFound) {
    pluginFound = detectPlugin('QuickTime');
    // if not found, try to detect with VisualBasic
    if(!pluginFound && detectableWithVB) {
        pluginFound = detectQuickTimeActiveXControl();
    }
    return redirectCheck(pluginFound, redirectURL, redirectIfFound);
}
//------------------------------------------------------------------------------
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 redirectCheck(pluginFound, redirectURL, redirectIfFound);
}
//------------------------------------------------------------------------------
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 redirectCheck(pluginFound, redirectURL, redirectIfFound);
}
//------------------------------------------------------------------------------


//------------------------------------------------------------------------------
// 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>');
}

var BrowserDetect = {
    init: function () {
        this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
        this.version = this.searchVersion(navigator.userAgent) ||
                this.searchVersion(navigator.appVersion) ||
                "an unknown version";
        this.OS = this.searchString(this.dataOS) || "an unknown OS";
    },
    searchString: function (data) {
        for (var i=0;i<data.length;i++)    {
            var dataString = data[i].string;
            var dataProp = data[i].prop;
            this.versionSearchString = data[i].versionSearch || data[i].identity;
            if (dataString) {
                if (dataString.indexOf(data[i].subString) != -1) {
                    return data[i].identity;
                }
            } else if (dataProp) {
                return data[i].identity;
            }
        }
        return;
    },
    searchVersion: function (dataString) {
        var index = dataString.indexOf(this.versionSearchString);
        if (index == -1) {
            return;
        }
        return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
    },
    dataBrowser: [
        {     string: navigator.userAgent,
            subString: "OmniWeb",
            versionSearch: "OmniWeb/",
            identity: "OmniWeb"
        },
        {
            string: navigator.vendor,
            subString: "Apple",
            identity: "Safari"
        },
        {
            prop: window.opera,
            identity: "Opera"
        },
        {
            string: navigator.vendor,
            subString: "iCab",
            identity: "iCab"
        },
        {
            string: navigator.vendor,
            subString: "KDE",
            identity: "Konqueror"
        },
        {
            string: navigator.userAgent,
            subString: "Firefox",
            identity: "Firefox"
        },
        {
            string: navigator.vendor,
            subString: "Camino",
            identity: "Camino"
        },
        {        // for newer Netscapes (6+)
            string: navigator.userAgent,
            subString: "Netscape",
            identity: "Netscape"
        },
        {
            string: navigator.userAgent,
            subString: "MSIE",
            identity: "Explorer",
            versionSearch: "MSIE"
        },
        {
            string: navigator.userAgent,
            subString: "Gecko",
            identity: "Mozilla",
            versionSearch: "rv"
        },
        {         // for older Netscapes (4-)
            string: navigator.userAgent,
            subString: "Mozilla",
            identity: "Netscape",
            versionSearch: "Mozilla"
        }
    ],
    dataOS : [
        {
            string: navigator.platform,
            subString: "Win",
            identity: "Windows"
        },
        {
            string: navigator.platform,
            subString: "Mac",
            identity: "Mac"
        },
        {
            string: navigator.platform,
            subString: "Linux",
            identity: "Linux"
        }
    ]

};
BrowserDetect.init();