// 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 canDetectPlugins() {
    if( detectableWithVB || (navigator.plugins && navigator.plugins.length > 0) ) {
	    return true;
    } 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 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);
};
//------------------------------------------------------------------------------
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>');
};

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;
		}
	},
	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();