Hassle Free Responsive Images for WordPress | CSS-Tricks
Responsive background images with fixed or fluid aspect ratios – Voormedia
What's the easiest way to scale background images in responsive layouts? We use an old technique and enhance it to fluidly change the aspect ratio of background images.
The Shocking Truth About How Web Graphics Affect Conversions
15 Amazing jQuery Image Gallery/Slideshow Plugins and Tutorials
Links to existing packages