[PHP & SQL] problem s nicky v komentech

Zdravim splacal jsem do hromady komentare. A mam problem. Vse se ukalda do DB jak ma ale kdyz napisu prvni komentar s nickem A, druhy s nickem B, treti s nickem C, porad se mi to do DB uklada jako $nick = A uz vazne netusim cim to je, kod se zda byt v poradku. Kdo by jste mel nejaky tip, dejte mi prosim vedet

echo "<hr color=silver width=90%>";

echo "<form method=post action=?page=$page&id=$id>";

 

echo "  <div><table class=tb_gb>";

echo "   <tr>";

echo "    <td class=td_gb_left><b>Nick</b>:</td>";



echo "    <td class=td_gb_right><input class=gb_inp name=nick type=text size=20></td>";

echo "   </tr>";



echo "   <tr>";

echo "    <td class=td_gb_left><b>Obsah</b>:</td>"; 

echo "    <td class=td_gb_right><textarea class=gb_text name=obsah cols=50 rows=7 wrap=virtual></textarea></td>";

echo "   </tr>";

echo "   <tr>";

echo "   <td class=td_gb_left></td>";

echo "   <td class=td_gb_right>";

echo "    <input class=gb_send name=go type=submit value='» Přidej komentář'>";



echo "    </td>";

echo "  </tr>";

echo "   </table></div>";

echo "  </form>   ";

echo "<hr color=silver width=90%>";



if(isset($go)){

//// ADD KOMENTAR ////

$date = Date("Y-m-d H:i:s");



$sql="INSERT INTO komentare VALUES ('$id', '$page', '$nick', '$obsah', '$date')";



$vysledek = MySQL_Query($sql);

}

else  {

echo "";}

vse vyreseno, dik :)