$planet->{"${type}img"} = 'stay';
$planet->{"${type}img"} = 'up' if $planet->{"${type}_gain_day"} > 0;
$planet->{"${type}img"} = 'down' if $planet->{"${type}_gain_day"} < 0;
$planet->{"${type}rankimg"} = 'stay';
$planet->{"${type}rankimg"} = 'up' if $planet->{"${type}rank_gain_day"} < 0;
$planet->{"${type}rankimg"} = 'down' if $planet->{"${type}rank_gain_day"} > 0;
$planet->{"${type}img"} = 'stay';
$planet->{"${type}img"} = 'up' if $planet->{"${type}_gain_day"} > 0;
$planet->{"${type}img"} = 'down' if $planet->{"${type}_gain_day"} < 0;
$planet->{"${type}rankimg"} = 'stay';
$planet->{"${type}rankimg"} = 'up' if $planet->{"${type}rank_gain_day"} < 0;
$planet->{"${type}rankimg"} = 'down' if $planet->{"${type}rank_gain_day"} > 0;