goToChapter() Method on iTunes LP

gotochapter.js

iTunes.goToChapter = function(cNum){
  //Note : iTunes.currentChapter starts at 1, NOT 0.

  //If currently playing track has no chapter
  if(this.currentChapter == 0 || ! cNum){
    return;
  }
	
  var isPlaying = false;
  if(this.waveform.waveformData){
    isPlaying = true;
    this.pause();
  }
	
  var diff = cNum - this.currentChapter;
  if(diff > 0){
    for(var i=0; i < diff; i++){
      this.nextChapter();
    }
  }else{
    for(var i=0; i >= diff; i--){
      this.previousChapter();
    }
  }

  if(isPlaying === true){
    this.pause();
  }
}