function addPlayer(){
  if(! navigator.appName.match("Microsoft")){
	document.write('<object id="player" type="audio/mpeg" width="0" height="0">');
  }
}
function hide(name){
  box = document.getElementById(name);
  if(navigator.appName.match("Microsoft")){
	box.style.visibility = "hidden";
  } else {
	box.setAttribute("class", "hidden");
  }
}

function show(name){
  box = document.getElementById(name);
  if(navigator.appName.match("Microsoft")){
	box.style.visibility = "visible";
  } else {
	box.setAttribute("class", "shown");
  }
}

function play(_data){
  if(navigator.appName.match("Microsoft")){
	player = document.getElementById("_player");
	player.src = "mp3/" + _data;
  } else {
	player = document.getElementById("player");
	player.data = "mp3/" + _data;
  }
  show("btn");
}

function stop(_data){
  if(navigator.appName.match("Microsoft")){
	player = document.getElementById("_player");
	player.src = "";
  } else {
	player = document.getElementById("player");
	player.data = "";
  }
  hide("btn");
}