code: function displayNameDOM(node){
      $('.nodeLabel').remove();
      var nodePos = layout.getNodePosition(node._id);
      var domPos = {
          x: nodePos.x,
          y: nodePos.y
      };
  
      graphics.transformGraphToClientCoordinates(domPos);
  
      var labelStyle = generateDOMLabel(node).style;
      labelStyle.left = domPos.x;
      labelStyle.top = domPos.y;
  }
docs: Removes the previous label and add a new one for the current node
  @param node