Kendo UI Menu item source

Menu access item dataSource on select

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>
<ul id="menu"></ul>

CSS

html { font: 12px Arial, Helvetica, sans-serif; }

JavaScript

function onSelect(e) {
    var item = $(e.item),
        menuElement = item.closest(".k-menu"),
        dataItem = this.options.dataSource,
        index = item.parentsUntil(menuElement, ".k-item").map(function () {
            return $(this).index();
        }).get().reverse();

    index.push(item.index());

    for (var i = -1, len = index.length; ++i < len;) {
        dataItem = dataItem[index[i]];
        dataItem = i < len-1 ? dataItem.items : dataItem;
    }

    alert(JSON.stringify(dataItem.value));
}

$(document).ready(function() {
    $("#menu").kendoMenu({
        dataSource: [
            {
                text: "Item 1",
                value: {toto: 'toto', tata: 'tata'},
                items: [
                    {
                        text: "Sub Item 1",
                        value: "Sub Item 1 Value",
                        items: [
                            {
                                text: "Sub Sub Item 1",
                                value: "Sub Sub Item 1 Value"
                            },
                            {
                                text: "Sub Sub Item 2",
                                 value: "Sub Sub Item 2 Value"
                            }
                         ]
                    },
                    {
                        text: "Sub Item 2",
                        value: "Sub Item 2 Value"
                    }
                ]
            },
            {
                text: "Item 2",
                value: "Item 2 Value"
            },
            {
                text: "Item 3",
                value: "Item 3 Value"
            }
        ],
        select: onSelect
    });
});