In this article I used the cloud effect birdunyadusun.com site will explain the technique.
Some sites have similar made with Mootools. I did research in jQuery forum. No information about the coding of similar applications. This article has nothing to parallax technique. Let's start coding.
The following code will load the clouds just below is a description of the body.

And using this javascript codes for generating clouds:

You can use this image file(Transparent PNG, thanks gündüzhan):

Output current screen:
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Powerful ajax slider script in script.aculo.us . I created new asp.net slider component using this. Orjinal script.

ScreentShots:

JCrop is powerful image croper javascript tool. I created asp.net ajax control for jcrop and opened download. Follow the images. Jcrop is free software released under MIT License.

Save as croped area when clicked cropit button.

btnCropIt Click code example:

Image1.ImageUrl = “~/Uploads/Image/” + ImageCroper1.Crop(Server.MapPath(”Uploads/Image/”));

OmrCommon.rar (51,75 kb)