A form dropdown acting as an ajax div trigger???

Hi there,

I was wondering if a dropdown menu could trigger/show an ajax div with some more form textfields

this must be the trigger

<select>
      <option value="noshow">no ajax</option>
<option value="show">show ajax</option>
    </select>

Code (markup):

and this would be the more ajax content div

<div id="ajaxcontent">
some more form fields
</div>

Code (markup):

Any tips, advice

 

hmm, tried this with no succes

<option value="show" onchange="makeRequest('bigimg.php','ajaxcontent')">show ajax</option>

Code (markup):