var count = 0;
var baseSpeed = 0.05;
var radiusX = 150;
var radiusY = 50;
var centerX = 190;
var centerY = 75;
var speed = 0.2;
var imageDivs = '';
var numberOfElements = 0;
var carousel = '';
var speedTest = '';
var interv=0;

window.addEvent('domready', function(){

	carousel = $('carousel');
	speedTest = $('speedTest');

	carousel.setStyles({
		display:'block',
		opacity: 0
	});

	imageDivs = carousel.getElementsByTagName("div");
	numberOfElements = imageDivs.length;

	playCarousel();
	carousel.fade('in');

	$('carousel').getElements('div').addEvents({
		mouseenter: function(){
			stopCarousel();
		},
		mouseleave: function(){
			playCarousel();
		}
	});

	//carousel.addEvent('mousemove', onMouseMove.bindWithEvent( carousel ));

});


function onMouseMove( evt ) {

	tempX = evt.client.x;
	speed = (tempX - centerX) / 2500;

}

function stopCarousel()
{
    clearInterval(interv);
}
function playCarousel()
{
    interv=setInterval('startCarousel()',30);
	setTimeout('stopCarousel()',120*1000); // arret auto apres 2 min
}
function startCarousel(){

	for(i=0; i < numberOfElements; i++){

		angle = i * ( Math.PI * 2 ) / numberOfElements;

		imageDivsStyle = imageDivs[ i ].style;
		imageDivsStyle.position='absolute';

		posX = ( Math.sin( count * ( baseSpeed * speed ) + angle )* radiusX + centerX );
		posY = ( Math.cos( count * ( baseSpeed * speed ) + angle )* radiusY + centerY );


		imageDivsStyle.left = posX+"px";
		imageDivsStyle.top = posY+"px"

		imageDivWidth = posY/1;
		imageDivZIndex = Math.round(imageDivWidth)+100;

		imageDivsStyle.width = imageDivWidth+'px';
		imageDivsStyle.zIndex = imageDivZIndex;

		angle += speed;


	}

	count++
}