Blur effect is an object that can apply the blur effect to HTML page elements. It takes the identifier of a given page element and starts an animation effect that progressively alters CSS properties of that element that make it appear blurred. Different CSS properties may be altered depending on the capabilities of the current browser. The object can also execute an animation that reverts the blur effect of the element. There are versions of the object either based or not in the jQuery library.
Light source is an object which can apply a shadow to page elements based on the position of a light. It takes the identifier of a page element and changes its CSS atttributes which define shadow parameters depending on the position of a light source relative to the target element and its children elements. The shadow can be generated either with the shape of the text elements or the whole box of the target element.