Change Slider width size

You need to change the slider dimensions in style.css

Right around line 570, you'll see the width and height of the actual slider.

#slider {
  position: relative;
  width: 930px;
  height: 350px;
  margin-bottom: 40px;
}

You can tweak it here. You'll also want to do the same a bit lower down (line 580, I think), at this code:

.window {
  overflow: hidden;
  position: relative;
  width: 930px;
  height: 320px;
}

The widths should be the same, and the first height (#slider) should be 30px greater than the second (.window)

I'm not so sure how to reposition the slideshow, but it probably has to do with the position property in those lines

Thanks, it works for me!