Checkbox and Ajax

hello, I am trying to display a Textarea if a user checks the checkbox and hides the textarea if the checkbox is not clicked. I can get the display working properly, however the actual checkbox is not actually checking. It is staying blank (not checked) no matter how many times I click it. Here is my code

<%= check_box "event", "has_policy", "onclick" => "Effect.toggle('policy'); return false;" %> <label class="choice" for="lbl3">Yes I want add a policy/terms agreement</label>

<div id="policy" style="display:none;"> <div>   <%= form.text_area :policy_a, :id=> 'field19', :cols => 50, :rows => 10, :class => "medium" %> </div> </div>

I'm guessing that "return false" is preventing the onclick from taking its default action, which is to check or uncheck the box.

I'm guessing that "return false" is preventing the onclick from taking its default action, which is to check or uncheck the box.

I thought same thing. I tried that as well, but it broke the Toggle event.

So if you try ‘return true;’ is it always checked?