Indsætte addslashes() i DB

Jeg har problemer med nedenstående kode, den indsætter topic i databasen, uden at den adder slashes...

Jeg har prøvet at echo addslashes($topic), og der er der slashes på...

Cellen i databasen er af typen: varchar



<?php
include("../db.inc");
//include("./login_tjek.php");
if($settopic == 1) {
    if($topic != "") {
        $topic = trim($topic);
        $topic = addslashes($topic);
        mysql_query("UPDATE site SET overskrift='$topic' WHERE id='$id'");
        echo "<script>
            window.opener.document.location.reload();
            self.close();
        </script>";
        exit;
    }
    else {
        $Error = "<font color='red'>You have to enter a topic</font>";
    }
}

$topicQ = mysql_query("SELECT overskrift FROM site WHERE id='$id'");
$topicR = mysql_fetch_array($topicQ);
$topic = stripslashes($topicR['overskrift']);
//Site start
echo "<body topmargin='0' leftmargin='0' rightmargin='0' bottommargin='0'>
<table width='360' height='100' cellspacing='0' cellpadding='0' border='0'>
    <tr>
        <td width='360'>
            $Error
        </td>
    </tr>
    <tr>
        <td width='360'>
            Write a topic for your page
        </td>
    </tr>
    <tr>
        <td width='360'>
            <form action='' method='post'>
            <input type='hidden' name='settopic' value='1'>
            <input type='hidden' name='id' value='$id'>
            <input type='text' name='topic' value='$topic'>
        </td>
    </tr>
</table>";
?>