FCKEditor Help

[maxclif]

I use Fckeditor to enter text in one of my site forms. All I want is that the user should atleast enter 100 characters or else a popup should come up.
Can anyone help me with this :)

[Supah Fly]

<form name="name-of-form" method="get" action="http://www.yourdomain.com" onsubmit="showpopup()">
<input type="text" name="textbox-name">
<input type="submit" value="Submit form">
</form>

function showpopup() {
if (name-of-form.textbox-name.value.length < 100) {
alert('You entered less then 100 characters!!!');
return('false');
}
else {
return('true');
}
}

[maxclif]

Its a late reply but thank you :)