That's just what I was looking for. In fact, I wanted the box even bigger than that, so I tried a textarea instead, and that works fine. Here's the code I used (line 125):
html += ' <textarea id="'+name+'" cols="40" rows="10"></textarea>';
This pushes the input name on the left down to the bottom of the textarea, so I added a vertical-align to the previous line (line 124):
html += ' <strong style="color: blue;vertical-align: top;">'+text+'</strong>';
Thanks for the very speedy response...