I have this:
<select name="idx" id="search-field_0">
<option value="kw">Keyword</option>
<option value="su,wrdl">Subject</option>
<option value="ti">Title</option>
<option value="au,wrdl">Author</option>
<option value="pb,wrdl">Publisher</option>
<option value="pl,wrdl">Publisher location</option>
<option value="nb">ISBN</option>
<option value="bc">Barcode</option>
</select>
I want to change its highlight background to green. How will I do this , without converting my tag to any form.Any idea?