Size featured slider

Hi,I use the featured slider which is working well. I use 4 pictures. However 2 of them show 4 sentences and 2 others just 3 sentences. This means the size of the box changes when the pictures with 4 sentences appear. The pictures have the same length. Now only the number of sentences need to be equal. I think then the box doesn't change size anymore. You can see the slider on www.worldcupbrazil.net. Thanks in advance!