-<form action="{!URL!}/modules.php?module=admin&what=del_holiday" method="POST">
+<form action="{!URL!}/modules.php?module=admin&what=del_holiday" method="post">
<table border="0" cellspacing="0" cellpadding="0" class="admin_table dashed">
<tr>
<td width="10" class="admin_title bottom2 right2" align="center"