js event?

[abs0lut]

<option>yes</option>
<option>no</option>
When I select yes in the dropdown without pressing submit button, it will show an input field. is it possible in javascript? could you please help me?

[DimX]

<form name="aform" action="#">
<select onchange="this.form.elements['nofkids'].style.display = this.value">
<option value="">Yes</option>
<option value="none">No</option>
</select>
<input type="text" name="nofkids">
</form>

This will also hide the field when you select "No".

[abs0lut]

thank you very much