function pop(format, clip){
	//      alert("popping:" + charname + ";" + type);
	var audio = "/cgi-registry/2wgbh/masterpiece/restrict.pl?site=3&pl=" + format + "&rate=hi&ch=" + clip;

	var audio_win = window.open(audio,'audio_win','toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,width=370,height=200');
	 audio_win.focus();
	}