function popup(w, h, url, x) {
var winl = (screen.width - w) / 2;
var wint = (screen.height - h) / 2;
if (x == 1) { scrl = "yes" };
if (x == 0) { scrl = "no" };
akarmi = window.open(url, 0, 'width=' + w + ',height=' + h + ',top=' + wint + ',left=' + winl + ',scrollbars=' + scrl + ',scroll=1,resizeable=0');
if (parseInt(navigator.appVersion) >= 4) { akarmi.window.focus(); }
}