{
//== Hide the node's VisualItem
m_vis.getVisualItem(treeNodes, node).setVisible(false);
m_vis.getSourceTuple(m_vis.getVisualItem(treeNodes, node)).setString("visible", "false");
//== Hide all edges to the node
Iterator edgeIt = node.edges();
while(edgeIt.hasNext())
{
Edge edge = (Edge)edgeIt.next();
m_vis.getVisualItem(treeEdges, edge).setVisible(false);
}