Preloading of images

When we user larger images in the header for example the header is loaded white or grey depending of background color set. Then the image is loaded.

If it is a slider the images are loaded when the slider changes the slider not before.

You need to pre load images or give us a setting checkbox if one image should be preloaded or not. This would stop image flickering when you have one image and loads another on top of that.

I also want to use preloader for stuff outside viewport so it do not render before someone starts scrolling. This would speed up things a lot.