function tweetlyric(arg1, arg2) {
  var url = 'http://twitter.com/home/?status=' 
      + encodeURIComponent(
           arg1 + '/' + arg2 + ' ' + location.href
        );
  window.open(url, "_blank");
}
function tweet() {
  var title = document.title;
  var url = 'http://twitter.com/home/?status=' 
      + encodeURIComponent( title  + ' ' + location.href );
  window.open(url, "_blank");
}