function ventana(url,n,w,h) {
    var posx = Math.round((screen.width-w)/2);
    var posy = Math.round((screen.height-h)/2);
    
    v = window.open(url,n,'scrollbars=yes,width='+w+',height='+h+',left='+posx+',top='+posy+',screenX='+posx+',screenY='+posy);
    mw = w + 6;
    mh = h + 72;
    iw = w + 30;
    ih = h + 90;
    if (navigator.appName == "Netscape") {
        if (h >= 600) {
            mw += 17;
        }
        v.resizeTo(mw,mh);
    } else {
        v.resizeTo(iw,ih);
    }
    v.focus();
}

function valores() {
	MOOdalBox.open('valores.php', '','970 515');
}