     project = undefined
     if path == '/'
         top = '.'
-        path = <span/>
+        path_component = <span/>
     else
         v = path.split('/').slice(2)
         top = ('..' for x in v).join('/')

            else
                t += '/..'
        segments.reverse()
        path = r_join(segments, <span style={margin:'0 5px'}> / </span>)

        if project_id
            i = path.slice(1).indexOf('/')

            <a href={top} style={textDecoration:'none'}><CoCalcLogo base_url={base_url} /> Shared</a>
        </span>
        <span style={paddingLeft: '15px', borderLeft: '1px solid black', marginLeft: '15px'}>
            {path_component}
        </span>
        {project}
    </div>
