Smajlcí z textového na grafický

<script>
function pridejSmajlik(smilie){
    document.book.comment.focus();
    document.book.comment.value += smilie + " ";
    document.book.comment.focus();
}
</script>

<a href="javascript:pridejSmajlik(':-D')"><img src="images/smajlici/smiley_icq1.gif" border="0"></a>
<a href="javascript:pridejSmajlik(':-P')"><img src="images/smajlici/smiley_icq2.gif" border="0"></a> 
<a href="javascript:pridejSmajlik(':-(')"><img src="images/smajlici/smiley_icq3.gif" border="0"></a> 

<img src="images/smajlici/smiley_icq1.gif" width="20" height="20" alt=":-D">

<?php
    $comment=str_replace(":-D",'<img src="images/smajlici/smiley_icq1.gif" width="20" height="20" alt=":-D">',$comment);
    $comment=str_replace(":-P",'<img src="images/smajlici/smiley_icq2.gif" width="20" height="20" alt=":-P">',$comment);
    $comment=str_replace(":-(",'<img src="images/smajlici/smiley_icq3.gif" width="20" height="20" alt=":-(">',$comment);
?>

<?php
session_start();
?>

<?php
Session_start();
require_once "config.php";
if($_GET['id'] != ""){
$idecko = $_GET['id'];
}else{
$idecko = 1;
}

if($_POST['odoslane1'] == "ano"){
$chyba = true;
if($_SESSION["captcha"] == $_POST["captcha"]){
if($_POST['name'] != ""){
if($_POST['comment'] != ""){
$komentar = htmlspecialchars($_POST['comment']);
$meno = htmlspecialchars($_POST['name']);
mysql_query("INSERT INTO diskuze (id, meno, mail, text, cas) VALUES (0, '".$meno."', '".$_POST['email']."', '".$komentar."', ".time().")");
$chyby = "<div class=\"correctdiv\">Komentár byl úspesne odeslán</div>";
$chyba = false;
}else{$chyby = "<div class=\"errordiv\">Nevyplnili ste text komentara</div>";}
}else{$chyby = "<div class=\"errordiv\">Nevyplnili ste meno</div>";}
}else{$chyby = "<div class=\"errordiv\">Zadali ste nespravny captcha kod</div>";}
}
?>
<script>
function pridejSmajlik(smilie){
    document.book.comment.focus();
    document.book.comment.value += smilie + " ";
    document.book.comment.focus();
}
</script>
                        <h2 class="subtitle">Napsat komentář</h2>
                        <form method="post" id="frmcomment">
                        <input type="hidden" name="odoslane1" value="ano" />
                            <div>
                                <label for="lblname">Jméno <span>(povinné)</span></label>
                                <input type="text" name="name" <?php
                                if($chyba){
                                if($_POST['name'] != ""){
                                echo 'value="'.$_POST['name'].'" ';
                                }}
                                ?>class="textboxcomment" id="lblname" /><br />
                                <label for="lblemail">Email <span>(nepovinné)</span></label>
                                <input type="text" name="email" <?php
                                if($chyba){
                                if($_POST['email'] != ""){
                                echo 'value="'.$_POST['email'].'" ';
                                }}
                                ?>class="textboxcomment" id="lblemail" /><br />
                                <label for="lblcomment">Text <span>(povinné)</span></label>
     <a href="javascript:pridejSmajlik(':-D')"><img src="images/smajlici/smiley_icq1.gif" border="0"></a>
        <a href="javascript:pridejSmajlik(':-P')"><img src="images/smajlici/smiley_icq2.gif" border="0"></a> 
        <a href="javascript:pridejSmajlik(':-(')"><img src="images/smajlici/smiley_icq3.gif" border="0"></a>    
                                <textarea name="comment" cols="80" rows="10" id="lblcomment" class="textareacomment">
                                
                            <?php
                            
                                    if($chyba){
                                if($_POST['comment'] != ""){
                                echo $_POST['comment'];
                                }}
                                ?></textarea><br />
                                <label for="lblcaptcha"><img src="captcha.php" alt="captcha" />&nbsp;&nbsp;Opsat kód do políčka níže <span>(povinné)</span></label>
                                <input type="text" name="captcha" class="textboxcomment" id="lblcaptcha"/><br />
                                <input type="submit" name="submitcomment" class="submitcomment" value="Odeslat" />
                            </div>
                        </form>