Rkns.randomData = function(_renkan, _opts) {

    _opts = _opts || {};

    _opts.user_count = _opts.user_count || 5;

    _opts.node_count = _opts.node_count || 20;

    _opts.edge_count = _opts.edge_count || 2 * _opts.node_count;

    _opts.user_colors = _opts.user_colors || ["#ff0000", "#008000", "#0000ff", "#808000", "#808080", "#c000c0", "#00c0c0"];

    var _proj = _renkan.project

    for (var i = 0; i < _opts.user_count; i++) {

        _proj.addUser({

            id: "user-"+i,

            title: "User #"+(1+i),

            color: _opts.user_colors[i]

        });

    }

    for (var i = 0; i < _opts.node_count; i++) {

        _proj.addNode({

            id: "node-"+i,

            title: "Node #"+(1+i),

            created_by: "user-" + Math.floor(_opts.user_count*Math.random()),

            position: {

                x: 300 * Math.cos(2 * Math.PI * i / _opts.node_count),

                y: 300 * Math.sin(2 * Math.PI * i / _opts.node_count)

            }

        });

    }

    for (var i = 0; i < _opts.node_count; i++) {

        var _from, _to;

        _from = _to = Math.floor(_opts.node_count*Math.random());

        while(_from === _to) {

            _to = Math.floor(_opts.node_count*Math.random());

        }

        _proj.addEdge({

            id: "edge-"+i,

            title: "Edge #"+(1+i),

            created_by: "user-" + Math.floor(_opts.user_count*Math.random()),

            from: "node-" + _from,

            to: "node-" + _to

        });

    }

    _renkan.current_user = "user-0";

}