I installed your JF slideshow on a responsive template and everything works as expected in a PC browser. On the contrary, when browsing with a mobile the height of the images is not resized proportionally with the width.
Update: indeed there is the same behaviour in pc browser. If I reload the page in a reduced width all images are loaded as it was in a full size. Then single images are rescaled (only the width) to fit the reduced browser windows and so all images are stretched.
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