Clear input on focus with jQuery and return on blur

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<script src="http://http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>   
<input id="txt2" value="enter text" />

<script>
      $(window).load(function () {
       $('#txt2').val('Search');
            $('#txt2').bind('blur',function() {
                $(this).val('Search');
      });
      $('#txt2').bind('focus',function() {
                $(this).val('');
      });
      });
</script>
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