smart slideshow not changing size on zoom in/zoom out

Hi,

I got installed smart slideshow, and everything is working perfectly.
I have check it on 13′, 15′ and 20′ monitor, the size of slideshow in header is the changing as the screen is changing sizes.

But..

If I zoom in (ctl & +) than slideshow screen stays the same, doesn’t follow the header size..

how can I fix this.

thank you