Thank you for trying to help.
I am aware of how to replace the images themselves, perhaps I didnt phrase my question clearly.
What I am trying to do is have the BG1 BG2 BG3 images fade in and out, as opposed to the instant slide.
I am not using the slider text or overlay images, just simply the BG images and I have them auto rotating. I want the appearance to be more attractive with a fade in function in the css coding as opposed to the instant flip of the image.