jquery : div replace link

gistfile1

$(document).ready(function() {
     $('div.chapter a[@href*=wikipedia]').each(function(index) {
       var $thisLink = $(this);
$thisLink.attr({
'rel': 'external',
'id': 'wikilink-' + index,
'title': 'learn more about ' + $thisLink.text() + ' at Wikipedia'
}); });
});


$('<a href="#top">back to top</a>').insertAfter('div.chapter p');
 $('div.chapter p').after('<a href="#top">back to top</a>');