function thisfocus() {
    if ((window.location + "").indexOf("backopen") == -1) {
        if (top.location == self.location) {
            self.focus();
            self.moveTo(0, 0);
            self.resizeTo(screen.availWidth, screen.availHeight);
            setTimeout('thisfocus();', 6000000);
        }
    }
}
try { thisfocus(); } catch (err) { }