The trick is to add some more logic to your perl code:
my $has_approved_records = 0;
my $reqs;
while (my $row = $sth->fetchrow_arrayref) {
$has_approved_records 1 = if $row->{status} eq 'Approved';
push @$reqs, $row;
}
...
$template->param(REQS => $reqs, HAS_APPROVED_RECORDS => $has_approved_
+records);
And in the template
<TMPL_IF HAS_APPROVED_RECORDS>
<span class="hotspot" onmouseover="tooltip.show('<strong>Approved
+Vacation Requests</strong><br /><TMPL_VAR DATE>');" onmouseout="toolt
+ip.hide();">
</TMPL_IF>
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