Kendo-mobile - show/hide tabstrip

HTML

<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.2.621/styles/kendo.common.min.css">
<script src="http://cdn.kendostatic.com/2012.2.621/js/kendo.all.min.js"></script>
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.2.621/styles/kendo.mobile.all.min.css">
<div data-role="view" data-init="mobileListViewPullToRefresh" data-title="Pull to refresh">
    <header data-role="header">
        <div data-role="navbar">
            <span data-role="view-title"></span>
        </div>
    </header>

    <ul id="listview" data-role="listview" data-source="dataSource" data-pull-to-refresh="true" data-append-on-refresh="true" data-template="pull-to-refresh-template"></ul>
</div>

<script id="pull-to-refresh-template" type="text/x-kendo-template">
    <div class="tweet">
        <img class="pullImage" src="#= profile_image_url #" alt="#= from_user #" />#= text #
    </div>
</script>

CSS

.tweet {
    font-size: .8em;
    line-height: 1.4em;
}
.pullImage {
    width: 64px;
    height: 64px;
    border-radius: 3px;
    float: left;
    margin-right: 10px;
}
.sublink {
    font-size: .9em;
    font-weight: normal;
    display: inline-block;
    padding: 3px 3px 0 0;
    text-decoration: none;
    opacity: .8;
}

JavaScript

var app = new kendo.mobile.Application(document.body);


var lastID;
var dataSource = new kendo.data.DataSource({
    serverPaging: true,
    transport: {
        read: {
            url: "http://adapptalo.com/wordpress/?json=get_recent_posts", // the remove service url
            dataType: "jsonp" // JSONP (JSON with padding) is required for cross-domain AJAX
        },
        parameterMap: function(options) {
            var page = options.page;
            var parameters = {
                q: "javascript",
                since_id: lastID //additional parameters sent to the remote service
            }

            return parameters;
        }
    },
    change: function() {
        var item = this.view()[0];

        if (item) {
            lastID = item.id;
        }
    },
    schema: { // describe the result format
        data: "posts" // the data which the data source will be bound to is in the "results" field
    }
});