// 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>');
}

function displayQuickTime(qt_url)
{
	document.write('<object classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B" '
		+ 'codebase="http://www.apple.com/qtactivex/qtplugin.cab" '
		+ 'width="320" height="256"> '
		+ '<param name="src" '
	   	+ 'value="' + qt_url + '" /> '
		+ '<param name="controller" value="true" /> '
		+ '<param name="autoplay" value="false" /> '
		+ '<EMBED src="' + qt_url + '" width="320" height="256" autoplay="false" '
		+ 'controller="true" loop="false" bgcolor="#000000" pluginspage="http://www.apple.com/quicktime/download/"> '
		+ '</EMBED> '		  		
		+ '</object> '
		);
}