I am using the X-Editable jQuery edit in place library for a Task Status selection field. All it;s stages are shown below from the process of:
$("#Id_Selecteventtype")[0].selectedIndex = 1;
http://jsfiddle.net/n1k5cLx0/
Are you looking for a list or do you still want a dropdown with the options shown as default. For a list style you could use the size attribute with the select element.
HTML
<select size="3">
<option>Not Started</option>
<option selected>In Progess</option>
<option>Completed</option>
</select>
CSS
select{
overflow:auto;
}