var href = jQuery('#linkChange').html();
var link = "<a href='"+href+"' target='_blank'>"+href+"</a>";
jQuery('#linkChange').replaceWith(link);<script type="text/javascript">
$(document).ready(function(){
$('td span').each(function(){
$(this).html("<a href='" + $(this).html() + "' />" +
$(this).html() + "</a>");
});
});
</script><a href="http://www.domain.com/about" target="_blank">http://www.domain.com/about</a><span id="linkChange">http://domain.com</span>