function Open_answer (n,m,q,r)
{
    var msgWindow = window.open (n, r, "height=" +q+ ",width=" +m+ ", status=no, toolbar=no, menubar=no, location=yes, resizable=yes, scrollbars=yes");
    if (msgWindow != null && msgWindow.opener == null) msgWindow.opener=window;
    if (navigator.appVersion.charAt(0) == 4) {
        msgWindow.focus();
    }
}