Maybe I am completely missing something, but
if(isset($delete)){
$d=$HTTP_POST_VAR['sena_allowed_ip'];
echo "it must be $d";
}
The above is in your delete_ip.php script, but your form is pointing to:
/deleteip/delete_ip.php , so "delete" is not set!
Try $PHP_SELF or if the delete script is purely for deleting change to something like this:
$d=$HTTP_POST_VAR['sena_allowed_ip'];
echo "it must be $d";
Sorry, this was done in a hurry..
Br
Jamie
PS:
Also you have an error in form:
<SELECT NAME NAME="sena_allowed_ip" SIZE=5 onChange="" >
Take out 1 name.
If you are still having problems, post all your code and I will help more. Is
<TITLE>Deleting IP address Manager</TITLE>
that part of the same page?