function radio()
{
	w = 320
	h = 200
	window.open("radio/myRadio.htm", "popup", "height="+h+",width="+w+",toolbar=no,scrollbars=no,left="+((screen.width-w)/2)+",top="+((screen.height-h)/2))
}

document.write('<a href=# OnClick=radio()>Ascolta la radio!</a>');