在TD内部使用高度100％切割FF中的内容

Im using following markup, but in FF (v30) td are not stretched by the last div with red backcolor. Is it correct? It thought TD should be stretched by content (its normal behavior for td). How I can fix it (2 divs with 100% height are necessary and can't be deleted)?Im using following markup, but in FF (v30) td a