Hide div once sql query is successful

I am trying to make the div, "yourpick," hide once the POST query is successful. I know I'm checking for the POST in the middle of my form, but can we work around this. Thanks.

echo '<div class="yourpick" style="display:block;">
            YOUR PICK:<br><form method="post" action="draft.php">';
    echo '<input type="radio" name="pick" value="user1">User1<br>';

if(isset($_POST["pick"])){
$pick = $_POST["pick"];
$picksql = "UPDATE picks SET playerpick='" . $pick . "' WHERE id=$id AND picknum=$picknum";

if ($mysqli->query($picksql) === TRUE) {
echo "Pick Successful!";
echo "<script>document.getElementById('yourpick').style.display = 'none';</script>";
} else {
echo "Error Ocurred. Please contact commisioner.";
}
}


echo "<input type='submit' name='submit' /></form></div>";