php rookie here...with a slight problem.

Thanks to the tremendous help I received last night...i have mastered creating dynamic dropdown lists and describing database/table contents after they are selected...

I also know how to delete the tables/databases once they are selected...but now I have another problem...

once I delete a database using the dropdown menu and submit button, the database does get dropped...but the name of the database stays in the dropdown menu until i refresh the whole page...removing it. Here is my code...

#connect to mysql

$conn = mysql_connect( "localhost", "", "" )
or die( "Am I using the right file?" );
#define variables

$result = mysql_list_dbs($conn);
$self = $_SERVER['PHP_SELF'];
$schools = $_POST['schools'];
#list schools

$form = "

";
$form.="Select School:  ";

while ($row = mysql_fetch_row($result))
{
$form.="$row[0]";
}
$form.="";
$form.="


";
#delete schools

$sql = "DROP DATABASE $schools";
if( mysql_query( $sql, $conn ) )
{
echo( "$schools successfully deleted" );
}
$form.="

";
echo( $form );
?>

is there something that i'm doing wrong or forgetting?
@xxxxx]::::::::::::::::::::::::::>*