Kai Button can add life to your buttons on your web pages by enabling you to rotate images on mouseover, or on mouseout or on onclick events. Everytime a user performs any one of these events a JavaScript function is called into action. Different values are returned by the handlers which call the image-rotating function. To show the URL of the link correctly, the onmouseover and onmouseout events have to return both false. To execute an onclick event, it has to return true enabling the browser to process the click and direct the user to the corresponding page.