These links:
"How to modify an HTML Select when the name is an array using Javascript"
and "How to pass an array from HTML to Javascript?"
blinds me on what if i have select tags with 2 or more different names like:
<select name='category[123]'>
<option value='0'>off</option>
<option value='1'>on</option>
</select>
<select name='category[456]'>
<option value='0'>off</option>
<option value='1'>on</option>
</select>
<select name='anothercategory[123]'>
<option value='0'>off</option>
<option value='1'>on</option>
</select>
<select name='anothercategory[456]'>
<option value='0'>off</option>
<option value='1'>on</option>
</select>