Using Parallax scrolling in webdesign. Part 1

Parallax scrolling in web design is a very nice design trend that I hope will stay for a while.
Here comes some great examples of what parallax scrolling add to the user experience:

And here are three useful tutorials for the handy men:

• Create a Funky Parallax Effect using jQuery
• jQuery and CSS single page portfolio, a vertical parallax navigation experiment
• Scrolling Parallax: A jQuery Plugin