function open_win(ref, name, width, height) {
    var wpar = "toolbar=no";
    if (width)
	wpar += ",width="+width
    if (height)
	wpar += ",height="+height
    window.open(ref, name, wpar);
    return false;
}

function showReview(rev) {
		var r = document.getElementById('rev'+rev);
		var a = document.getElementById('an'+rev);
		a.style.display = 'none';
		r.style.display = 'block';
}