TWENTY-TEN:Adding Dropdown option to comment form on home.php

Hello everyone,
Doing my best to Show/Hide layers like it done at THIS theme. But having trouble with the javascript and it understanding to do a dropdown on comments and it conflicting with other posts on that particular page, in that it’s not “dropdown-ing” the comments on the other posts besides the newest post… kinda weird. Does it have to do with the loop language?

I am currently adding this code in my loop-index.php

<input type=button name=type value='Add Comment' onclick="setVisibility('newcomment', 'inline');";>
<input type=button name=type value='Nevermind...' onclick="setVisibility('newcomment', 'none');";>

<div id="newcomment">

<?php comment_form(); ?>
</div>