var audio = new Image(); audio.src = "images/icon_audio.gif";
var audio_on = new Image(); audio.src = "images/icon_audio_on.gif";
var mp3 = new Image(); mp3.src = "images/icon_mp3.gif";
var mp3_on = new Image(); mp3.src = "images/icon_mp3_on.gif";
var real = new Image(); real.src = "images/icon_real.gif";
var real_on = new Image(); real.src = "images/icon_real_on.gif";