// 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 detectQuickTime(redirectURL, redirectIfFound) {
    
    pluginFound = detectPlugin('QuickTime');
   
   // if not found, try to detect with VisualBasic
    if (!pluginFound && detectableWithVB) {
		pluginFound = detectQuickTimeActiveXControl();
    }
    
   if (pluginFound == false) {
    	document.getElementById('noqt_installed').style.display='block';
    }
}

function detectPlugin() {
    
    // allow for multiple checks in a single pass
    var thePlugins = 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 < thePlugins.length; namesCounter++) {
		
		// if desired plugin name is found in either plugin name or description
		if( (navigator.plugins[pluginsArrayCounter].name.indexOf(thePlugins[namesCounter]) >= 0) || 
		    (navigator.plugins[pluginsArrayCounter].description.indexOf(thePlugins[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 == thePlugins.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 to control Quicktime playback ---------------------------------------------------- */
function qtControl(type, value) {

	var player = document.tut_player;

	switch (type) {
		case "status":
			document.getElementById('playback_status').innerHTML = player.GetPluginStatus();
			break;
			
		case "rate":
			player.SetRate(value);
			break;
			
		case "mute":
			if (player.GetMute() == 0) { player.SetMute(1); } else { player.SetMute(0); }
			break;
			
		case "time":
			document.getElementById('playback_time').innerHTML = (player.GetTime() / 1000);
			break;
			
		case "duration":
			alert(player.GetDuration());
			break;
			
		case "version":
			alert(player.GetQuickTimeVersion());
			break;
			
	}
}

/* ----- Function to display playback time ---------------------------------------------------- */
function qtPlaybackTime() {

	if (document.getElementById('init_player')) {
		qtControl('time','');
		setTimeout("qtPlaybackTime()",1000);
	}
}

/* ----- Function to initiate qt functions ---------------------------------------------------- */
function qtInit() {

	if (document.getElementById('init_player')) {
	
		document.getElementById('qt_control_area').style.visibility='visible';
		qtPlaybackTime();
		
	} else {
	
		document.getElementById('video_title').innerHTML = '';
		document.getElementById('qt_control_area').style.visibility='hidden';
		
	}
}