I'm trying to style an HTML select menu with JQuery UI; but it simply isn't working. Here is a JSFiddle.
Below are stripped down examples of what I'm trying to accomplish.

Here's my HTML code:

<form action=#>

    <fieldset>

        <label for=parameterSelectMenu>Select a Parameter</label>

        <select name=parameterSelectMenu id=parameterSelectMenu>

            <option value=volvo>Temperature Actual</option>

        </select>

    </fieldset>

</form>

<!-- A button to show JQuery is working... -->

<button id=clicker>A button element</button>

Here's the JavaScript:

$(#clicker).button();

$(#parameterSelectMenu).selectmenu();

In Firefox selectmenu is reported as not a function...