 
   sx = null
   sy = null
+  lastClicked = null
   cx = 0
   cy = 0
 

      @y = 0
      @parent = null
      @children = []
      @link = null
      @text = 'asdfasdf'
      nodes.push @

    setParent: (parent) ->

      .enter()
      .append('g')
      .classed('node', true)
      .on('dblclick', (node) ->
        new Node().setParent node
        refresh()
      )
      .on('click', (node) ->
        $('#panel a').html node.link
      )
    node.append('circle')
    node.append('text')
