CHAPTER 5 JQUERY BASICS Figure 5-1. Increasing image opacity The script changes the opacity of the daffodil, peony, and snowdrop images when the mouse is moved over them. This has the effect of making the image look a little brighter and washed out. When the mouse is moved away from the image, the opacity returns to its previous value. The images for the aster, rose, and primula are unaffected. Understanding the jQuery $ Function