function popup(obj, x, y, w, h, opts)   
{
    if (x < 0) x = self.screen ? (screen.width - w) >> 1 : 0;
    if (y < 0) y = self.screen ? (screen.height - h) >> 1 : 0;
    args = 'width=' + w + ',height=' + h + ',left=' + x + ',top=' + y;
    if (opts != '') args = args + ',' + opts;
    window.open(obj.href, obj.target, args).focus();
    return false;
}

function browser(obj, x, y, w, h)   
{
    if (x < 0) x = self.screen ? (screen.width - w) >> 1 : 0;
    if (y < 0) y = self.screen ? (screen.height - h) >> 1 : 0;
    args = 'width=' + w + ',height=' + h + ',left=' + x + ',top=' + y;
    opts = 'menubar=yes,resizable=yes,scrollbars=yes,status=yes,titlebar=yes,toolbar=yes';
    if (opts != '') args = args + ',' + opts;
    window.open(obj.href, obj.target, args).focus();
    return false;
}