Down Arrow Tester

HTML

<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.11.1/jquery-ui.min.js"></script>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.11.1/themes/black-tie/jquery-ui.css">
<button id="AccountListButton" class="btn accountLister" style="margin-left: -4px" data-bind="jqAutoCombo: 'AccountList'">...</button>

JavaScript

$(function () {
    $(".accountLister").button({
        icons: {
            primary: "ui-icon-gear",
            secondary: "ui-icon-triangle-1-s"
        }
    });
});