xref: /plugin/s5reloaded/ui/audio_support/soundmanager2.js

/*
   SoundManager 2: Javascript Sound for the Web.
   --------------------------------------------------
   http://www.schillmania.com/projects/soundmanager2/

   Copyright (c) 2007, Scott Schiller. All rights reserved.
   Code licensed under the BSD License:
   http://www.schillmania.com/projects/soundmanager2/license.txt

   Beta V2.0b.20070118
*/

function SoundManager(smURL,smID) {
  var self = this;
  this.enabled = false;
  this.o = null;
  this.url = (smURL||s5Path+'ui/audio_support/soundmanager2.swf');
  this.id = (smID||'sm2movie');
  this.oMC = null;
  this.sounds = [];
  this.soundIDs = [];
  this.allowPolling = true; // allow flash to poll for status update (required for "while playing", "progress" etc. to work.)
  this.isIE = (navigator.userAgent.match(/MSIE/));
  this.isSafari = (navigator.userAgent.match(/safari/i));
  this._didAppend = false;
  this._didInit = false;
  this._disabled = false;
  this.version = 'V2.0b.20070118';

  this.defaultOptions = {
    // -----------------
    'debugMode': false,            // enable debug/status messaging, handy for development/troubleshooting - will be written to a DIV with an ID of "soundmanager-debug", you can use CSS to make it pretty
    'autoLoad': false,             // enable automatic loading (otherwise .load() will be called on demand with .play(), the latter being nicer on bandwidth - if you want to .load yourself, you also can)
    'stream': true,                // allows playing before entire file has loaded (recommended)
    'autoPlay': false,             // enable playing of file as soon as possible (much faster if "stream" is true)
    'onid3': null,                 // callback function for "ID3 data is added/available"
    'onload': null,                // callback function for "load finished"
    'whileloading': null,          // callback function for "download progress update" (X of Y bytes received)
    'onplay': null,                // callback for "play" start
    'whileplaying': null,          // callback during play (position update)
    'onstop': null,                // callback for "user stop"
    'onfinish': null,              // callback function for "sound finished playing"
    'onbeforefinish': null,        // callback for "before sound finished playing (at [time])"
    'onbeforefinishtime': 2000,    // offset (milliseconds) before end of sound to trigger beforefinish (eg. 1000 msec = 1 second)
    'onbeforefinishcomplete':null, // function to call when said sound finishes playing
    'onjustbeforefinish':null,     // callback for [n] msec before end of current sound
    'onjustbeforefinishtime':200,  // [n] - if not using, set to 0 (or null handler) and event will not fire.
    'multiShot': true,             // let sounds "restart" or layer on top of each other when played multiple times, rather than one-shot/one at a time
    'pan': 0,                      // "pan" settings, left-to-right, -100 to 100
    'volume': 100,                 // self-explanatory. 0-100, the latter being the max.
    // -----------------
    'foo': 'bar' // you don't need to change this one - it's actually an intentional filler.
  }

  // --- public methods ---

  this.getMovie = function(smID) {
    // return self.isIE?window[smID]:document[smID];
    return self.isIE?window[smID]:(self.isSafari?document[smID+'-embed']:document.getElementById(smID+'-embed'));
  }

  this.loadFromXML = function(sXmlUrl) {
    try {
      self.o._loadFromXML(sXmlUrl);
    } catch(e) {
      self._failSafely();
      return true;
    }
  }

  this.createSound = function(oOptions) {
    if (!self._didInit) throw new Error('soundManager.createSound(): Not loaded yet - wait for soundManager.onload() before calling sound-related methods');
    if (arguments.length==2) {
      // function overloading in JS! :) ..assume simple createSound(id,url) use case
      oOptions = {'id':arguments[0],'url':arguments[1]}
    }
    var thisOptions = self._mergeObjects(oOptions);
    self._writeDebug('soundManager.createSound(): "<a href="#" onclick="soundManager.play(\''+thisOptions.id+'\');return false" title="play this sound">'+thisOptions.id+'</a>" ('+thisOptions.url+')');
    if (self._idCheck(thisOptions.id,true)) {
      self._writeDebug('sound '+thisOptions.id+' already defined - exiting');
      return false;
    }
    self.sounds[thisOptions.id] = new SMSound(self,thisOptions);
    self.soundIDs[self.soundIDs.length] = thisOptions.id;
    try {
      self.o._createSound(thisOptions.id,thisOptions.onjustbeforefinishtime);
    } catch(e) {
      self._failSafely();
      return true;
    }
    if (thisOptions.autoLoad || thisOptions.autoPlay) self.sounds[thisOptions.id].load(thisOptions);
    if (thisOptions.autoPlay) self.sounds[thisOptions.id].playState = 1; // we can only assume this sound will be playing soon.
  }

  this.load = function(sID,oOptions) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].load(oOptions);
  }

  this.unload = function(sID) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].unload();
  }

  this.play = function(sID,oOptions) {
    if (!self._idCheck(sID)) {
      if (typeof oOptions != 'Object') oOptions = {url:oOptions}; // overloading use case: play('mySound','/path/to/some.mp3');
      if (oOptions && oOptions.url) {
        // overloading use case, creation + playing of sound: .play('someID',{url:'/path/to.mp3'});
        self._writeDebug('soundController.play(): attempting to create "'+sID+'"');
        oOptions.id = sID;
        self.createSound(oOptions);
      } else {
        return false;
      }
    }
    self.sounds[sID].play(oOptions);
  }

  this.start = this.play; // just for convenience

  this.setPosition = function(sID,nMsecOffset) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].setPosition(nMsecOffset);
  }

  this.stop = function(sID) {
    if (!self._idCheck(sID)) return false;
    self._writeDebug('soundManager.stop('+sID+')');
    self.sounds[sID].stop();
  }

  this.stopAll = function() {
    for (var oSound in self.sounds) {
      if (oSound instanceof SMSound) oSound.stop(); // apply only to sound objects
    }
  }

  this.pause = function(sID) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].pause();
  }

  this.resume = function(sID) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].resume();
  }

  this.togglePause = function(sID) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].togglePause();
  }

  this.setPan = function(sID,nPan) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].setPan(nPan);
  }

  this.setVolume = function(sID,nVol) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].setVolume(nVol);
  }

  this.setPolling = function(bPolling) {
    if (!self.o || !self.allowPolling) return false;
    self._writeDebug('soundManager.setPolling('+bPolling+')');
    self.o._setPolling(bPolling);
  }

  this.disable = function() {
    // destroy all functions
    if (self._disabled) return false;
    self._disabled = true;
    self._writeDebug('soundManager.disable(): Disabling all functions - future calls will return false.');
    for (var i=self.soundIDs.length; i--;) {
      self._disableObject(self.sounds[self.soundIDs[i]]);
    }
    self.initComplete(); // fire "complete", despite fail
    self._disableObject(self);
  }

  this.getSoundById = function(sID,suppressDebug) {
    if (!sID) throw new Error('SoundManager.getSoundById(): sID is null/undefined');
    var result = self.sounds[sID];
    if (!result && !suppressDebug) {
      self._writeDebug('"'+sID+'" is an invalid sound ID.');
      // soundManager._writeDebug('trace: '+arguments.callee.caller);
    }
    return result;
  }

  this.onload = function() {
  	onloadSM2();
    // window.onload() equivalent for SM2, ready to create sounds etc.
    // this is a stub - you can override this in your own external script, eg. soundManager.onload = function() {}
    // soundManager._writeDebug('<em>Warning</em>: soundManager.onload() is undefined.');
  }

  this.onerror = function() {
  	onerrorSM2();
    // stub for user handler, called when SM2 fails to load/init
  }

  // --- "private" methods ---

  this._idCheck = this.getSoundById;

  this._disableObject = function(o) {
    for (var oProp in o) {
      if (typeof o[oProp] == 'function') o[oProp] = function(){return false;}
    }
    oProp = null;
  }

  this._failSafely = function() {
    // exception handler for "object doesn't support this property or method"
    var flashCPLink = 'http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager04.html';
    var fpgssTitle = 'You may need to whitelist this location/domain eg. file://C:/ or C:/ or mysite.com, or set ALWAYS ALLOW under the Flash Player Global Security Settings page. Note that this seems to apply only to file system viewing.';
    var flashCPL = '<a href="'+flashCPLink+'" title="'+fpgssTitle+'">view/edit</a>';
    var FPGSS = '<a href="'+flashCPLink+'" title="Flash Player Global Security Settings">FPGSS</a>';
    if (!self._disabled) {
      self._writeDebug('soundManager: JS-&gt;Flash communication failed. Possible causes: flash/browser security restrictions ('+flashCPL+'), insufficient browser/plugin support, or .swf not found');
      self._writeDebug('Verify that the movie path of <em>'+self.url+'</em> is correct (<a href="'+self.url+'" title="If you get a 404/not found, fix it!">test link</a>)');
      if (self._didAppend) {
        if (!document.domain) {
          self._writeDebug('Loading from local file system? (document.domain appears to be null, this location may need whitelisting by '+FPGSS+')');
          self._writeDebug('Possible security/domain restrictions ('+flashCPL+'), should work when served by http on same domain');
        }
        // self._writeDebug('Note: Movie added via JS method, static object/embed in-page markup method may work instead.');
      }
      self.disable();
    }
  }

  this._createMovie = function(smID,smURL) {
    var useDOM = !self.isIE; // IE needs document.write() to work, long story short - lame
    if (window.location.href.indexOf('debug=1')+1) self.defaultOptions.debugMode = true; // allow force of debug mode via URL
    var html = ['<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="16" height="16" id="'+smID+'"><param name="movie" value="'+smURL+'"><param name="quality" value="high"><param name="allowScriptAccess" value="always" /></object>','<embed name="'+smID+'-embed" id="'+smID+'-embed" src="'+smURL+'" width="1" height="1" quality="high" allowScriptAccess="always" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash"></embed>'];
    var debugID = 'soundmanager-debug';
    var debugHTML = '<div id="'+debugID+'" style="display:'+(self.defaultOptions.debugMode?'block':'none')+'"></div>';
    if (useDOM) {
      self.oMC = document.createElement('div');
      self.oMC.className = 'movieContainer';
      // "hide" flash movie
      self.oMC.style.position = 'absolute';
      self.oMC.style.left = '-256px';
      self.oMC.style.width = '1px';
      self.oMC.style.height = '1px';
      self.oMC.innerHTML = html[self.isIE?0:1];
      var oTarget = (!self.isIE && document.body?document.body:document.getElementsByTagName('div')[0]);
      oTarget.appendChild(self.oMC); // append to body here can throw "operation aborted" under IE
      if (!document.getElementById(debugID)) {
        var oDebug = document.createElement('div');
        oDebug.id = debugID;
        oDebug.style.display = (self.defaultOptions.debugMode?'block':'none');
        oTarget.appendChild(oDebug);
      }
       oTarget = null;
    } else {
      // IE method - local file system, may cause strange JS error at line 53?
      // I hate this method, but it appears to be the only one that will work (createElement works, but JS->Flash communication oddly fails when viewing locally.)
      // Finally, IE doesn't do application/xhtml+xml yet (thus document.write() is still minimally acceptable here.)
      if (document.getElementById(debugID)) debugHTML = ''; // avoid overwriting
      document.write('<div style="position:absolute;left:-256px;top:-256px;width:1px;height:1px" class="movieContainer">'+html[self.isIE?0:1]+'</div>'+debugHTML);
    }
    self._didAppend = true;
    self._writeDebug('-- SoundManager 2 Version '+self.version.substr(1)+' --');
    self._writeDebug('soundManager._createMovie(): trying to load <a href="'+smURL+'" title="Test this link (404=bad)">'+smURL+'</a>');
  }

  this._writeDebug = function(sText) {
    if (!self.defaultOptions.debugMode) return false;
    var sDID = 'soundmanager-debug';
    try {
      var o = document.getElementById(sDID);
      if (!o) {
        // attempt to create soundManager debug element
        var oNew = document.createElement('div');
        oNew.id = sDID;
        // o = document.body.appendChild(oNew);
        o = null;
        if (!o) return false;
      }
      var p = document.createElement('div');
      p.innerHTML = sText;
      // o.appendChild(p); // top-to-bottom
      o.insertBefore(p,o.firstChild); // bottom-to-top
    } catch(e) {
      // oh well
    }
    o = null;
  }

  this._debug = function() {
    self._writeDebug('soundManager._debug(): sounds by id/url:');
    for (var i=0,j=self.soundIDs.length; i<j; i++) {
      self._writeDebug(self.sounds[self.soundIDs[i]].sID+' | '+self.sounds[self.soundIDs[i]].url);
    }
  }

  this._mergeObjects = function(oMain,oAdd) {
    // non-destructive merge
    var o1 = oMain;
    var o2 = (typeof oAdd == 'undefined'?self.defaultOptions:oAdd);
    for (var o in o2) {
      if (typeof o1[o] == 'undefined') o1[o] = o2[o];
    }
    return o1;
  }

  this.createMovie = function(sURL) {
    self._writeDebug('soundManager.createMovie('+(sURL||'')+')');
    if (sURL) self.url = sURL;
    self._initMovie();
  }

  this._initMovie = function() {
    // attempt to get, or create, movie
    if (self.o) return false; // pre-init may have fired this function before window.onload(), may already exist
    self.o = self.getMovie(self.id); // try to get flash movie (inline markup)
    if (!self.o) {
      // try to create
      self._createMovie(self.id,self.url);
      self.o = self.getMovie(self.id);
    }
    if (!self.o) {
      self._writeDebug('SoundManager(): Could not find object/embed element. Sound will be disabled.');
      self.disable();
    } else {
      self._writeDebug('SoundManager(): Got '+self.o.nodeName+' element ('+(self._didAppend?'created via JS':'static HTML')+')');
    }
  }

  this.initComplete = function() {
    if (self._didInit) return false;
    self._didInit = true;
    self._writeDebug('-- SoundManager 2 '+(self._disabled?'failed to load':'loaded')+' ('+(self._disabled?'security/load error':'OK')+') --');
    if (self._disabled) {
      self._writeDebug('soundManager.initComplete(): calling soundManager.onerror()');
      self.onerror.apply(window);
      return false;
    }
    self._writeDebug('soundManager.initComplete(): calling soundManager.onload()');
    try {
      // call user-defined "onload", scoped to window
      self.onload.apply(window);
    } catch(e) {
      // something broke (likely JS error in user function)
      self._writeDebug('soundManager.onload() threw an exception: '+e.message);
      throw e; // (so browser/console gets message)
    }
    self._writeDebug('soundManager.onload() complete');
  }

  this.init = function() {
    // called after onload()
    self._initMovie();
    // event cleanup
    if (window.removeEventListener) {
      window.removeEventListener('load',self.beginInit,false);
    } else if (window.detachEvent) {
      window.detachEvent('onload',self.beginInit);
    }
    try {
      self.o._externalInterfaceTest(); // attempt to talk to Flash
      self._writeDebug('Flash ExternalInterface call (JS -&gt; Flash) succeeded.');
      if (!self.allowPolling) self._writeDebug('Polling (whileloading/whileplaying support) is disabled.');
      self.setPolling(true);
      self.enabled = true;
    }  catch(e) {
      self._failSafely();
      self.initComplete();
      return false;
    }
    self.initComplete();
  }

  this.beginInit = function() {
    self._initMovie();
    setTimeout(self.init,1000); // some delay required, otherwise JS<->Flash/ExternalInterface communication fails under non-IE (?!)
  }

  this.destruct = function() {
    if (self.isSafari) {
      /* --
        Safari 1.3.2 (v312.6)/OSX 10.3.9 and perhaps newer will crash if a sound is actively loading when user exits/refreshes/leaves page
       (Apparently related to ExternalInterface making calls to an unloading/unloaded page?)
       Unloading sounds (detaching handlers and so on) may help to prevent this
      -- */
      for (var i=self.soundIDs.length; i--;) {
        if (self.sounds[self.soundIDs[i]].readyState == 1) self.sounds[self.soundIDs[i]].unload();
      }
    }
    self.disable();
    // self.o = null;
    // self.oMC = null;
  }

}

function SMSound(oSM,oOptions) {
  var self = this;
  var sm = oSM;
  this.sID = oOptions.id;
  this.url = oOptions.url;
  this.options = sm._mergeObjects(oOptions);
  this.id3 = {
   /*
    Name/value pairs set via Flash when available - see reference for names:
    http://livedocs.macromedia.com/flash/8/main/wwhelp/wwhimpl/common/html/wwhelp.htm?context=LiveDocs_Parts&file=00001567.html
    (eg., this.id3.songname or this.id3['songname'])
   */
  }

  self.resetProperties = function(bLoaded) {
    self.bytesLoaded = null;
    self.bytesTotal = null;
    self.position = null;
    self.duration = null;
    self.durationEstimate = null;
    self.loaded = false;
    self.loadSuccess = null;
    self.playState = 0;
    self.paused = false;
    self.readyState = 0; // 0 = uninitialised, 1 = loading, 2 = failed/error, 3 = loaded/success
    self.didBeforeFinish = false;
    self.didJustBeforeFinish = false;
  }

  self.resetProperties();

  // --- public methods ---

  this.load = function(oOptions) {
    self.loaded = false;
    self.loadSuccess = null;
    self.readyState = 1;
    self.playState = (oOptions.autoPlay||false); // if autoPlay, assume "playing" is true (no way to detect when it actually starts in Flash unless onPlay is watched?)
    var thisOptions = sm._mergeObjects(oOptions);
    if (typeof thisOptions.url == 'undefined') thisOptions.url = self.url;
    try {
      sm._writeDebug('loading '+thisOptions.url);
      sm.o._load(self.sID,thisOptions.url,thisOptions.stream,thisOptions.autoPlay,thisOptions.whileloading?1:0);
    } catch(e) {
      sm._writeDebug('SMSound().load(): JS-&gt;Flash communication failed.');
    }
  }

  this.unload = function() {
    // Flash 8/AS2 can't "close" a stream - fake it by loading an empty MP3
    sm._writeDebug('SMSound().unload()');
    self.setPosition(0); // reset current sound positioning
    sm.o._unload(self.sID,s5Path+'ui/audio_support/null.mp3');
    // reset load/status flags
    self.resetProperties();
  }

  this.play = function(oOptions) {
    if (!oOptions) oOptions = {};

    // --- TODO: make event handlers specified via oOptions only apply to this instance of play() (eg. onfinish applies but will reset to default on finish)
    if (oOptions.onfinish) self.options.onfinish = oOptions.onfinish;
    if (oOptions.onbeforefinish) self.options.onbeforefinish = oOptions.onbeforefinish;
    if (oOptions.onjustbeforefinish) self.options.onjustbeforefinish = oOptions.onjustbeforefinish;
    // ---

    var thisOptions = sm._mergeObjects(oOptions);
    if (self.playState == 1) {
      // var allowMulti = typeof oOptions.multiShot!='undefined'?oOptions.multiShot:sm.defaultOptions.multiShot;
      var allowMulti = thisOptions.multiShot;
      if (!allowMulti) {
        sm._writeDebug('SMSound.play(): "'+self.sID+'" already playing? (one-shot)');
        return false;
      } else {
        sm._writeDebug('SMSound.play(): "'+self.sID+'" already playing (multi-shot)');
      }
    }
    if (!self.loaded) {
      if (self.readyState == 0) {
        sm._writeDebug('SMSound.play(): .play() before load request. Attempting to load "'+self.sID+'"');
        // try to get this sound playing ASAP
        thisOptions.stream = true;
        thisOptions.autoPlay = true;
        // TODO: need to investigate when false, double-playing
        // if (typeof oOptions.autoPlay=='undefined') thisOptions.autoPlay = true; // only set autoPlay if unspecified here
        self.load(thisOptions); // try to get this sound playing ASAP
      } else if (self.readyState == 2) {
        sm._writeDebug('SMSound.play(): Could not load "'+self.sID+'" - exiting');
        return false;
      } else {
        sm._writeDebug('SMSound.play(): "'+self.sID+'" is loading - attempting to play..');
      }
    } else {
      sm._writeDebug('SMSound.play(): "'+self.sID+'"');
    }
    if (self.paused) {
      self.resume();
    } else {
      self.playState = 1;
      self.position = (thisOptions.offset||0);
      if (thisOptions.onplay) thisOptions.onplay.apply(self);
      self.setVolume(thisOptions.volume);
      self.setPan(thisOptions.pan);
      if (!thisOptions.autoPlay) {
        sm._writeDebug('starting sound '+self.sID);
        sm.o._start(self.sID,thisOptions.loop||1,self.position); // TODO: verify !autoPlay doesn't cause issue
      }
    }
  }

  this.start = this.play; // just for convenience

  this.stop = function(bAll) {
    if (self.playState == 1) {
      self.playState = 0;
      self.paused = false;
      if (sm.defaultOptions.onstop) sm.defaultOptions.onstop.apply(self);
      sm.o._stop(self.sID);
    }
  }

  this.setPosition = function(nMsecOffset) {
    // sm._writeDebug('setPosition('+nMsecOffset+')');
    sm.o._setPosition(self.sID,nMsecOffset/1000,self.paused||!self.playState); // if paused or not playing, will not resume (by playing)
  }

  this.pause = function() {
    if (self.paused) return false;
    sm._writeDebug('SMSound.pause()');
    self.paused = true;
    sm.o._pause(self.sID);
  }

  this.resume = function() {
    if (!self.paused) return false;
    sm._writeDebug('SMSound.resume()');
    self.paused = false;
    sm.o._pause(self.sID); // flash method is toggle-based (pause/resume)
  }

  this.togglePause = function() {
    // if playing, pauses - if paused, resumes playing.
    sm._writeDebug('SMSound.togglePause()');
    if (!self.playState) {
      // self.setPosition();
      self.play({offset:self.position/1000});
      return false;
    }
    if (self.paused) {
      sm._writeDebug('SMSound.togglePause(): resuming..');
      self.resume();
    } else {
      sm._writeDebug('SMSound.togglePause(): pausing..');
      self.pause();
    }
  }

  this.setPan = function(nPan) {
    if (typeof nPan == 'undefined') nPan = 0;
    sm.o._setPan(self.sID,nPan);
    self.options.pan = nPan;
  }

  this.setVolume = function(nVol) {
    if (typeof nVol == 'undefined') nVol = 100;
    sm.o._setVolume(self.sID,nVol);
    self.options.volume = nVol;
  }

  // --- "private" methods called by Flash ---

  this._whileloading = function(nBytesLoaded,nBytesTotal,nDuration) {
    self.bytesLoaded = nBytesLoaded;
    self.bytesTotal = nBytesTotal;
    self.duration = nDuration;
    self.durationEstimate = parseInt((self.bytesTotal/self.bytesLoaded)*self.duration); // estimate total time (will only be accurate with CBR MP3s.)
    if (self.readyState != 3 && self.options.whileloading) self.options.whileloading.apply(self);
    // soundManager._writeDebug('duration/durationEst: '+self.duration+' / '+self.durationEstimate);
  }

  this._onid3 = function(oID3PropNames,oID3Data) {
    // oID3PropNames: string array (names)
    // ID3Data: string array (data)
    sm._writeDebug('SMSound()._onid3(): "'+this.sID+'" ID3 data received.');
    var oData = [];
    for (var i=0,j=oID3PropNames.length; i<j; i++) {
      oData[oID3PropNames[i]] = oID3Data[i];
      // sm._writeDebug(oID3PropNames[i]+': '+oID3Data[i]);
    }
    self.id3 = sm._mergeObjects(self.id3,oData);
    if (self.options.onid3) self.options.onid3.apply(self);
  }

  this._whileplaying = function(nPosition) {
    if (isNaN(nPosition) || nPosition == null) return false; // Flash may return NaN at times
    self.position = nPosition;
    if (self.playState == 1) {
      if (self.options.whileplaying) self.options.whileplaying.apply(self); // flash may call after actual finish
      if (self.loaded && self.options.onbeforefinish && self.options.onbeforefinishtime && !self.didBeforeFinish && self.duration-self.position <= self.options.onbeforefinishtime) {
        sm._writeDebug('duration-position &lt;= onbeforefinishtime: '+self.duration+' - '+self.position+' &lt= '+self.options.onbeforefinishtime+' ('+(self.duration-self.position)+')');
        self._onbeforefinish();
      }
    }
  }

  this._onload = function(bSuccess) {
    bSuccess = (bSuccess==1?true:false);
    sm._writeDebug('SMSound._onload(): "'+self.sID+'"'+(bSuccess?' loaded.':' failed to load (or loaded from cache - weird bug) - [<a href="'+self.url+'">test URL</a>]'));
    self.loaded = bSuccess;
    self.loadSuccess = bSuccess;
    self.readyState = bSuccess?3:2;
    if (self.options.onload) self.options.onload.apply(self);
  }

  this._onbeforefinish = function() {
    if (!self.didBeforeFinish) {
      self.didBeforeFinish = true;
      if (self.options.onbeforefinish) self.options.onbeforefinish.apply(self);
    }
  }

  this._onjustbeforefinish = function(msOffset) {
    // msOffset: "end of sound" delay actual value (eg. 200 msec, value at event fire time was 187)
    if (!self.didJustBeforeFinish) {
      self.didJustBeforeFinish = true;
      soundManager._writeDebug('SMSound._onjustbeforefinish()');
      if (self.options.onjustbeforefinish) self.options.onjustbeforefinish.apply(self);;
    }
  }

  this._onfinish = function() {
    // sound has finished playing
    sm._writeDebug('SMSound._onfinish(): "'+self.sID+'" finished playing');
    self.playState = 0;
    self.paused = false;
    if (self.options.onfinish) self.options.onfinish.apply(self);
    if (self.options.onbeforefinishcomplete) self.options.onbeforefinishcomplete.apply(self);
    // reset some state items
    self.setPosition(0);
    self.didBeforeFinish = false;
    self.didJustBeforeFinish = false;
  }

}

var soundManager = new SoundManager();

// attach onload handler
if (window.addEventListener) {
  window.addEventListener('load',soundManager.beginInit,false);
  window.addEventListener('beforeunload',soundManager.destruct,false);
} else if (window.attachEvent) {
  window.attachEvent('onload',soundManager.beginInit);
  window.attachEvent('beforeunload',soundManager.destruct);
} else {
  // no add/attachevent support - safe to assume no JS->Flash either.
  soundManager.disable();
}