JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.microsoft.com/ajax/jquery.validate/1.7/jquery.validate.js"></script>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/ui-lightness/jquery-ui.css">
<div id="system">
    <FORM ACTION="confirm-8.asp" METHOD="post" NAME="kassaForm">
        <TABLE BORDER="0" CELLSPACING="0" CELLPADDING="2" WIDTH="100%">
            <TR>
                <TD CLASS="td-menu" COLSPAN="7">
                    Kundeopplysninger
                </TD>
            </TR>
            <TR>
                <TD CLASS="td-main" COLSPAN="7">
                    <BR>
                    
                    here any name (<A HREF="edit-8.asp">Rediger dine kundeopplysninger</A>)
                    here any address<BR>
                    <BR>
                    2nd part of address<BR>
                    <BR>
                </TD>
                
            </TR>

CSS

span {
    background: yellow;
}

JavaScript

var textNode = $('#system a[href$="edit-8.asp"]')[0].nextSibling;

var newValue = textNode.nodeValue.replace(')', ')<br>');

$(textNode).replaceWith($('<span/>', {
    html: newValue
}));