Kendo UI

jQuery + Kendo UI + MockJax + Knockout

HTML

<link rel="stylesheet" href="http://cdn.kendostatic.com/2011.3.1129/styles/kendo.common.min.css">
<link rel="stylesheet" href="http://cdn.kendostatic.com/2011.3.1129/styles/kendo.blueopal.min.css">
<script src="http://cdn.kendostatic.com/2011.3.1129/js/kendo.all.min.js"></script>
            <select id="size">
                <option>is</option>
                <option>This is a really really really really long option. Testing.</option>
            </select>

JavaScript

$("#size").kendoDropDownList();

// get reference to the DropDownList
var dropdownlist = $("#size").data("kendoDropDownList");
// set width of the DropDownList
dropdownlist.list.width(500);