Niks in textarea

<form action="" method="post">
-->
<form action="" method="post" name="form">

<form action="" method="post">
-->
<form action="" method="post" name="form">

<script>
function addtext(veld, ubb) {
  document.forms['form'].elements[veld].value += ubb;
}
</script>

<script>
function addtext(veld, ubb) {
  document.forms['form'].elements[veld].value += ubb;
}
</script>

<img border="0" src="ubb/confused.png" onClick="javascript:addtext('S1',':s')">
-->
<img border="0" src="ubb/confused.png" onClick="javascript:addtext('bericht',':s')">

<img border="0" src="ubb/confused.png" onClick="javascript:addtext('S1',':s')">
-->
<img border="0" src="ubb/confused.png" onClick="javascript:addtext('bericht',':s')">