/**
 * @author Stéphane Roucheray 
 * @extends jquery
 */





jQuery.fn.carousel = function(previous, next, options){
	var sliderList = jQuery(this).children()[0];
	var InterVal = setInterval("$('#gallery-next').click()",3000);

	
	if (sliderList) {
		var increment = jQuery(sliderList).children().outerWidth("true"),
		elmnts = jQuery(sliderList).children(),
		numElmts = elmnts.length,
		sizeFirstElmnt = increment,
		shownInViewport = Math.round(jQuery(this).width() / sizeFirstElmnt),
		firstElementOnViewPort = 1,
		isAnimating = false;
		
		for (i = 0; i < shownInViewport; i++) {
			jQuery(sliderList).css('width',(numElmts+shownInViewport)*increment + increment + "px");
			jQuery(sliderList).append(jQuery(elmnts[i]).clone());
		}
		
		jQuery(previous).click(function(event){
			if (!isAnimating) {
				if (firstElementOnViewPort == 1) {
					jQuery(sliderList).css('left', "-" + numElmts * sizeFirstElmnt + "px");
					firstElementOnViewPort = numElmts;
					$('#gallery-viewport a').unbind().lightBox({
									  imageBlank:"fileadmin/template/images/lightbox-blank.gif",
									  imageLoading:"fileadmin/template/images/lightbox-ico-loading.gif",
									  imageBtnClose:"fileadmin/template/images/lightbox-btn-close.gif",
									  imageBtnPrev:"fileadmin/template/images/lightbox-btn-prev.gif",
									  imageBtnNext:"fileadmin/template/images/lightbox-btn-next.gif",
									  })
					/* .hover(function(){
						$(this).children("img").animate({"opacity":1},300);
					},function(){
						$(this).children("img").animate({"opacity":0.5},100);
					}); */
					
					//$(sliderList)
				}
				else {
					firstElementOnViewPort--;
				}
				
				jQuery(sliderList).animate({
					left: "+=" + increment,
					y: 0,
					queue: true
				}, "swing", function(){isAnimating = false;});
				isAnimating = true;
			}
			
		});
		jQuery(next).mouseup(function(){window.clearInterval(InterVal)});
		jQuery(previous).mouseup(function(){window.clearInterval(InterVal)});
		
		jQuery(next).click(function(event){
			
			if (!isAnimating) {
				if (firstElementOnViewPort > numElmts) {
					firstElementOnViewPort = 2;
					jQuery(sliderList).css('left', "0px");
				}
				else {
					firstElementOnViewPort++;
				}
				jQuery(sliderList).animate({
					left: "-=" + increment,
					y: 0,
					queue: true
				}, "swing", function(){isAnimating = false;});
				isAnimating = true;
			}
		});
	}
};