                 allNodes = nodes.get({ returnType: "Object" });
                  for (nodeId in allNodes) {
                    nodeColors[nodeId] = allNodes[nodeId].color;
                  }
                  allEdges = edges.get({ returnType: "Object" });
                  // adding nodes and edges to the graph
                  data = {nodes: nodes, edges: edges};

                  var options = {
    "configure": {
        "enabled": true,
        "filter": "physics"
    },
    "edges": {
        "c