JavaScript

<input id="rdo1" type="radio" name="rdoTest"  value="Hello" />
<input id="rdo2" type="radio" name="rdoTest"  value="World" />
<var id="test1" onchange="alert('2');">Test Value</var>

$(document).ready(function () {
    $('[name=rdoTest]').change(function () {
        $('#test1').text($('[name=rdoTest]:checked').val());
    });

    $('#test1').change(function () {
        alert($('#test1').text());
    });
});

var interval = setInterval(function () {     
        loadTableData(selectedOption);
    }, 20000);

function loadTableData(dataType) {
    $.get("/JsonResultlink", null, function (result) {
        var itemAdd;
        $.each(result, function (i, item) {
            loadRecordTimeOut = setTimeout(function () {
                if (result[i].VEHICLEPLATE !== undefined) {
                    // build the html code
                    itemToAdd = generateRow(result[i], dataType);
                    // add to table body
                    $('.tto-violation-tablebody').prepend(itemToAdd);
                    // if rows exceed 50 remove from bottom
                    checkRowCount();
                }
            }, 1000 * i);
        });
        clearTimeout(loadRecordTimeOut);
    });
}

I am trying to add theme on my web pages on button click, but i am unable to do it.
Would you please tell me how to do it?