def num_above
			count = 0
			self.node_maps.each { |i|
				# Parent is one of us as well - include it and check its parents
				if i.parent.node.class.ancestors.include?(self.class)
					count = count + 1 + i.parent.node.num_above
				end
			}
			count
		end
def num_above
			count = 0
			self.node_maps.each { |i|
				# Parent is one of us as well - include it and check its parents
				if i.parent.node.class.ancestors.include?(self.class)
					count = count + 1 + i.parent.node.num_above
				end
			}
			count
		end
Calculate the number of Rank nodes above this one