# This means we didn't start with the first row - there is
# at least 1 previous row. add a previous page link
set previous_start_idx [expr$start_idx - $max_entries_per_page]
set previous_start_idx [expr{$start_idx - $max_entries_per_page}]
if {$previous_start_idx < 0 }{ set previous_start_idx 0 }
set previous_page_html "<A href=$current_page_url?$pass_through_vars_html&forum_order_by=$forum_order_by&forum_start_idx=$previous_start_idx><<</a>"