antal karakterer i textarea

<script>
function check()
{
var tmp = document.minform.felt.value
if (tmp.length() > 100)
{
alert(\'Maks 100 tegn\');
return false;
}
else
{
return true;
}
}
</script>

<form onsubmit=\"return check()\" name=\"minform\">
<textarea name=\"felt\"></textarea>
<input type=\"submit\">
</form>

Dammit, sådan her:

<script>
function check()
{
var tmp = document.minform.felt.value
if (tmp.length > 100)
{
alert(\'Maks 100 tegn\');
return false;
}
else
{
return true;
}
}
</script>

<form onsubmit=\"return check()\" name=\"minform\" action=\"http://www.cnh.dk\">
<textarea name=\"felt\"></textarea>
<input type=\"submit\">
</form>