GSO and GBSO are designed to serve as spacers ordistance pieces. They greatly simplify assembly and speed the production offabricated spaced panels and components.
The purpose of Slider Kit is to gather common slideshow-like jQuery functionalities (such as news sliders, photos galleries/sliders, carousels, tabs menus)
When tracking mouse movement, you usually need to know the actual position of the mouse pointer. The event object that is passed to the handler contains some information about the mouse coordinates.