what will be the code to insert print button functionality to display grid view data

<script src="http://code.jquery.com/jquery-latest.min.js">
        type="text/javascript"></script>

<script type="text/javascript">
    function printData() {
        var divToPrint = document.getElementById("printTable");
        var newWin = window.open("");
        newWin.document.write(divToPrint.outerHTML);
        newWin.print();
        newWin.close();
    }
</script>

<table border="1" cellpadding="3" id="printTable">
    <tbody><tr>
        <th>First Name</th>
        <th>Last Name</th>
        <th>Points</th>
    </tr>
    <tr>
        <td>Jill</td>
        <td>Smith</td>
        <td>50</td>
    </tr>
    <tr>
        <td>Eve</td>
        <td>Jackson</td>
        <td>94</td>
    </tr>
    <tr>
        <td>John</td>
        <td>Doe</td>
        <td>80</td>
    </tr>
    <tr>
        <td>Adam</td>
        <td>Johnson</td>
        <td>67</td>
    </tr>
</tbody></table>