function showFramer(url)
{
    if( screen.width > 800 && screen.height > 600 )
        window.open(url, '','left=' + ((screen.width - 800) / 2) + ', top=' + ((screen.height - 600) / 2) + ', width=800, height=600, scrollbars=yes, status=no');
    else
        window.open(url, '','fullscreen=yes, scrollbars=yes, status=no');
}