It must be the print statement that is now being executed. I can't explain the error but if you want the links at the bottom of the page you can't print them inside the sub. I suggest you add them onto the page returned like this ;
@nav_link = map { "[$_]\n" } @nav_link;
$page .= "<hr>@nav_link";
return ($page);

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poj

In reply to Re: Re: Re: Multiple page listings - previous/next feature by poj
in thread Multiple page listings - previous/next feature by b310

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