function controlSound()
{
	if (document.getElementById("soundBtn").innerHTML=="stop music") {
		window.top.music.document.getElementById("music").innerHTML=""
		document.getElementById("soundBtn").innerHTML="play music"
	} else {
		window.top.music.document.getElementById("music").innerHTML="<object  type=\"application/x-shockwave-flash\" id=\"flash\" data=\"/swf/music.swf\" width=\"100\" height=\"10\"><param name=\"movie\" value=\"/swf/music.swf\" /></object>"
		document.getElementById("soundBtn").innerHTML="stop music"
	}
}

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent(function() {
	if (window.top.music.document.getElementById("music").innerHTML=="") {
		document.getElementById("soundBtn").innerHTML="play music"
	} else {
		document.getElementById("soundBtn").innerHTML="stop music"
	}
});