Parallax scrolling is a web site trend where the background content (i.e. an image) is moved at a different speed than the foreground content while scrolling. Click on the links below to see the difference between a website with and without parallax scrolling.

Website with Parallex Effect

Website without parallax effect

Look At some great sites with parallax
http://www.awwwards.com/30-great-websites-with-parallax-scrolling.html

Some Code Stuff(Please Visit Below Link)
http://www.w3schools.com/howto/tryit.asp?filename=tryhow_css_parallax_percent

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