Grommet bumpers are excellent when you need through hole protection. Designed to fit snugly into your opening and not let air, water, etc. pass through. These parts can also be used as feet.
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.