on="&setting.topSitesRows;." data-img="chrome://bfwindows/content/options/resources/siterows.jpg">
                            <label>&setting.topSitesRows;</label>
                            <hbox>
                                <input id="topSitesRows" style="max-width: 28px;" xmlns="http://www.w3.org/1999/xhtml" type="number" min="0" max="50"/>
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                    <vbox id="page6" data-step="extras">
       