Untitled

<!DOCTYPE HTML>
<html>
<head>
    <meta http-equiv="Content-type" content="text/html; charset=utf-8">
   	<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
    <title>M</title>
    <script type="text/javascript">
        $(document).ready(function(){
            $('#peshka').bind("click",function(){
                if($('#peshka').val() == 'Turn it on'){
                    $('#img').attr('src','img/OnLamp.png');
                    $('#peshka').attr('value','Turn it off');
                }
                else {
                    $('#img').attr('src','img/OffLamp.ico');
                    $('#peshka').attr('value','Turn it on');
                }
            });
        });
    </script>

</head>
<body>
    <p><img src="img/OffLamp.ico" id="img" width="90px" height="90px"></p>
    <input type="button" id="peshka" value="Turn it on">


</body>
</html>