def render(navigate, crumbsmenu, **kwargs):
    """Generate and return HTML for breadcrumb widget.

        ``navigate``,
            List of tuples (name, url) providing the name of the bread-crumb
            and optional url.

        ``breadmenu``,
            Map of breadcrumb name, provided in ``navigate`` attribute, and a
            list of tuple (name, url). Each tuple is rendered as a menu-item.

        Optional keyword arguments,

        ``id``,
            If specified will be used as **id** attribute for the widget node.
        """
