document.form.element.click

<td onmouseover="this.style.cursor='hand';" onclick="document.form.rca[1][0].checked = true; return false;">
<input type="radio" name="rca[1]" value="strongly agree" class="layout">
</td>

Does anyone see a problem with that? On my test page I the problem seemed to be naming the input button an array.

whoops, disregard this one

onclick="document.form.elements['rca[1]'][0].checked = true; return false;"

Is there any reason you're using a "bracketed" name? Are you using php?

Learning the square bracket notation (http://www.litotes.demon.co.uk/js_info/sq_brackets.html) is very useful especially in this case.

whoops, disregard this one
I typed slow...But for the benefit of others, could you explain why?

I used getElementById with the radios each unique

edit: fixed new issue