At present, web designers are more focused to create a sense of depth in website design and this is the most effective for web design trends 2012. This emerging trend brings parallax scrolling into the picture. Parallax scrolling is a special technique first used in side scrolling video games but now in website.
In the parallax effect, designers are using multiple layers to create an illusion of a 3 dimensional space where background images move slower than foreground image to add nice three dimensional depth illusions to the design. It can be done with the help of simple CSS tricks or Spritely jQuery plugins.