Link the file 'carousel.js' and 'carousel.css'

Create the element in dom like this:
	<div class="example1" id="carousel">
		<div class="slide-button left">
		<ul class="carousel-list">
			<li class="pic-item"><img></img></li>
			........(The pictures you want to show)
		</ul>
	</div>

And in javascript, create an instance of Object Carousel:
var carousel = new(height, width, id, speed);
parameters:
	height : The height of the pictrues
	width  : The width of the pictures
	id     : The id of the dom element you create, in the example the id is 'example1' 
	speed  : The value can be 'fast', 'slow' or the number(the time of the animation)