lass="fa fa-share-alt fa-lg tooltip"><span class="tooltiptext">Highlight neighbors</span></b>
        <b id="removeHighlights" class="fa fa-share-alt-square fa-lg tooltip"><span class="tooltiptext">Remove highlight of neighbors</span></b>
        &nbsp;
        <b id="collapseAll" class="fa fa-compress fa-lg tooltip"><span class="tooltiptext">Collapse all</span></b> 
        <b id="expandAll" class="fa fa-expand fa-lg tooltip"><span class="tooltiptext">Expand all</span></b>
        &nbsp;
        <b id="col