ho provato così.. ma non riesco a far considerare varWord come contenuto del campo varWord

FUNZIONE:

<script language="javascript">
function aggiungi(cosa) {
document.form1.mess.value+=cosa;
}
</script>


FORM:

<form name="form1" method="post" action="insert10.php">
<table width="80%" border="0" cellspacing="4" cellpadding="4">
<tr valign="top">
<td rowspan="4">
<input type="text" name="nom" size="40" value="">
</td>
<td>aggiungi link [img]123.gif[/img]
<input type="text" name="varWord ">
<input type="text" name="collegamento">
</td>
<td rowspan="4">
<input type="submit" name="Submit" value="Inserisci Nuovo">
</td>
</tr>
<td> <font face="Verdana, Arial, Helvetica, sans-serif">
<textarea name="mess" rows="6" cols="50"></textarea>
</font></td>
</tr>
</table>

</form>

qualche suggerimento?
grazie