jQuery addClass example
Change class name on click in jQuery
by Vipin Patil
HTML
<form>
<select name="o1" id="o1">
<option value="item0" >--Select an Item--</option>
<option value="item1">item1</option>
<option value="item2">item2</option>
<option value="item3">item3</option>
</select>
<select name="o2">
<option value="item0" >--Select an Item--</option>
<option value="item1">item1</option>
<option value="item2">item2</option>
<option value="item3">item3</option>
</select>
</form>
JavaScript
$(document).ready(function () {
$("#o1").change(function () {
});
});