k-panelbar with images

HTML

<script src="http://cdn.kendostatic.com/2012.1.322/js/kendo.all.min.js"></script>
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.1.322/styles/kendo.common.min.css">
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.1.322/styles/kendo.metro.min.css">
<script src="http://demos.kendoui.com/content/shared/icons/sports/baseball.png"></script>
<div id="panelbar-images"></div>

CSS

#panelbar-images {
 width: 50%;
 margin: 20px auto;    
}

#panelbar-images{
    border-color:Blue;
    border-width:2px;
}

JavaScript

var img_source = "http://demos.kendoui.com/content/shared/icons/sports/baseball.png"
$("#panelbar-images").kendoPanelBar({
    dataSource: [
        {
            text: "Item 1",
            imageUrl: img_source,
            items: [
                {
                text: "Sub Item 1.1",
                valor: 2,
                imageUrl: img_source},
            {
                text: "Sub Item 1.2",
                valor: 3,
                imageUrl: img_source}
        ]},
        {
            text: "Item 2",
            imageUrl: img_source,
            items: [
                {
                text: "Sub Item 2.1",
                valor: 5,
                imageUrl: img_source},
            {
                text: "Sub Item 2.2",
                valor: 5,
                imageUrl: img_source},
            {
                text: "Sub Item 2.3",
                valor: 5,
                imageUrl: img_source},
            {
                text: "Sub Item 2.4",
                valor: 5,
                imageUrl: img_source},
            {
                text: "Sub Item 2.5",
                valor: 5,
                imageUrl: img_source}
        ]}
    ]
});