function aken(url, name, w, h, scroll)
{
        var top = (screen.height-h)/2;
        var left = (screen.width-w)/2;

        var features = 'width='+w+',height='+h+',toolbar=0,status=0,menubar=0,directories=0,location=0,copyhistory=0,resizable=yes,screenx='+left+',screeny='+top+',left='+left+',top='+top;

        if (scroll == 1)
                features += ", scrollbars=no";
        else
                features += ", scrollbars=yes";

        tmp = window.open(url, name, features);
        tmp.focus();
        return(false);
}