kendo grid inline edit

HTML

<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.3.1114/styles/kendo.common.min.css">
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.3.1114/styles/kendo.default.min.css">
<script src="http://cdn.kendostatic.com/2012.3.1114/js/kendo.all.min.js"></script>
<script src="http://demos.kendoui.com/content/shared/js/people.js"></script>
<div id="grid"></div>

CSS

* {
    font-family: Verdana, sans-serif;
    font-size: 12px;
}

#grid tbody tr:hover {
    background: #8b0000;
    color: white;
}

JavaScript

function getRequiredMessage(input) {
       return "User name is required";
       //debugger;
       return "Rajeev";
       if (input.is("[name=username]")) {
                 return "User name is required";
             }
        else
             return input.attr("name") + " Field is Required";
    }
    
    function lowerThanHighest(input) {
                   // alert(input);
                    input.attr("data-FirstName-msg", "Lowest must be lower than Highest");
										return true;
                  }
$("#grid").kendoGrid({
    dataSource: {
        data    : createRandomData(50),
        pageSize: 10,
        schema  : {
            model: {
                fields: {
                    id       : { type: 'number'},
                    FirstName: { type: 'string', validation: {required: 
                    
                    function(input) { lowerThanHighest(input); }
                    
                    }},
                    LastName : { type: 'string' },
                    City     : { type: 'string' },
                    Title    : { type: 'string' },
                    BirthDate: { type: 'date' },
                    Age      : { type: 'number' }
                }
            }
        }
    },
    editable  : "incell",
    pageable  : {
        refresh  : true,
        pageSizes: true
    },
    columns   : [
        {
            field: "FirstName",
            width: 90,
            title: "First Name"
        } ,
        {
            field: "LastName",
            width: 90,
            title: "Last Name"
        } ,
        {
            width: 100,
            field: "City"
        } ,
        {
            field: "Title"
        } ,
        {
            field   : "BirthDate",
            title   : "Birth Date",
            template: '#= kendo.toString(BirthDate,"dd MMMM yyyy") #'
        } ,
        {
            width: 50,
            field: "Age"
        }
    ]
});