Поиск c подсветкой на странице средствами jQuery

<html>
<head>
<title>Search</title>
<style type="text/css">
p {
       border: 1px solid black;
      width: 500px;
 padding: 5px;
}
.highlight {
        background-color: yellow;
}
</style>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$(document).ready(function () {
    $('#search').click(highlight);
    $('#clear').click(clearSelection);

    function highlight() {
        var searchText = $('#text').val();
        var regExp = new RegExp(searchText, 'g');
        clearSelection();
        $('p').each(function () {
            var html = $(this).html();
            var newHtml = html.replace(regExp,
                '<span class="highlight">' + searchText + '</span>');
            $(this).html(newHtml);
        });
    }

    function clearSelection() {
        $('p').each(function () {
            $(this).find('.highlight').each(function () {
                $(this).replaceWith($(this).html());
            });
        });
    }
});
</script>
</head>
<body>
<form>
  <p> I consider that a man's brain originally is like a little 
    empty attic, and you have to stock it with such furniture 
    as you choose. A fool takes in all the lumber of every 
    sort that he comes across, so that the knowledge which 
    might be useful to him gets crowded out, or at best is 
    jumbled up with a lot of other things, so that he has a 
    difficulty in laying his hands upon it. </p>
  <p> I consider that a man's brain originally is like a little 
    empty attic, and you have to stock it with such furniture 
    as you choose. A fool takes in all the lumber of every 
    sort that he comes across, so that the knowledge which 
    might be useful to him gets crowded out, or at best is 
    jumbled up with a lot of other things, so that he has a 
    difficulty in laying his hands upon it. </p>
  <p> I consider that a man's brain originally is like a little 
    empty attic, and you have to stock it with such furniture 
    as you choose. A fool takes in all the lumber of every 
    sort that he comes across, so that the knowledge which 
    might be useful to him gets crowded out, or at best is 
    jumbled up with a lot of other things, so that he has a 
    difficulty in laying his hands upon it. </p>
  <input type="text" id="text"/>
  <input type="button" id="search" value="Search"/>
  <input type="button" id="clear" value="Clear"/>
</form>
</body>
</html>
VESELOV.SUMY.UA

Поиск c подсветкой на странице средствами jQuery
