function playMusic(ctrl, music) {
	if (Prototype.Browser.IE){
		$(ctrl).src=music;
	}
}
function changeMusic(ctrl, music) {
	if (Prototype.Browser.IE){
		if ($(ctrl).src == music)
		     $(ctrl).src = '';
		     else
		     $(ctrl).src = music
	}
}
function stopMusic(ctrl) {
	if (Prototype.Browser.IE){
		$(ctrl).src='';
	}
}
function playIn() {
	playMusic('s_ie_msgin', '/sounds/msg_in.mp3');
}
function stopIn() {
}