Show/Hide Div based on Select Box Choice

JavaScript
1

Ok so I have a select box where the value must be passed via the form. If the users selects choice B or Choice C then I want a specific div to show. If they choose choice A then I want the div to hide or remain hidden. It should be hidden on page load.
Code:

<select name="Event_Type_ID">
    <option value="1">Choice A</option>
    <option value="2">Choice B</option>
    <option value="3">Choice C</option>
</select>

<div id="showme">
 Content to show if EITHER Choice B or C is chosen. Otherwise this div  should be hidden.
</div>

Can anyone lead me in the right direction?
Thanks!

2

Set up an onchange event for the select box.

In the function find out which option is currently selected.
If it’s the first one, hide the div, otherwise show it.