def full_colspan
			raw_span = components.keys.collect{ |key|
				key.at(0)
			}.max.to_i
			(raw_span > 0) ? raw_span + 1 : nil
		end
def full_colspan
			raw_span = components.keys.collect{ |key|
				key.at(0)
			}.max.to_i
			(raw_span > 0) ? raw_span + 1 : nil
		end
=begin
		def explode!
			@grid.explode!
			super
		end
=end