rem: var soundUrlLocation = document.getElementById('soundUrlLocation'); 
add: var soundUrlLocation = document.getElementById("soundUrlLocation"); 
context:   readSoundLocation: function()  {    var soundUrlLocation = document.getElementById('soundUrlLocation');       soundUrlLocation.value = document.getElementById("mail.biff.play_sound.url").value;         soundUrlLocation.label = this.convertURLToLocalFile(soundUrlLocation.value).leafName;    soundUrlLocation.image = "moz-icon://" + soundUrlLocation.label + "?size=16";    return undefined;  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/cd6ec565fe621ec0d0d807f468b6a031b835afe8/notifications.js/buggy/mail/components/preferences/notifications.js