(function($) {  
$.fn.jCarouselLite = function(o) {
	o = $.extend({
		btnPrev: null,
		btnNext: null,
		auto: null,
		
		speed: 200,
		easing: null,
		
		visible: 2,
		start: 0,
		scroll: 1
	}, o || {});

	return this.each(function() { 

		var running = false, animCss="top", sizeCss="height";
		var div = $(this), ul = $("ul", div), tLi = $("li", ul), tl = tLi.size(), v = o.visible;
		
		
		ul.prepend(tLi.slice(tl-v-1+1).clone()).append(tLi.slice(0,v).clone());
		o.start += v;
		
		var li = $("li", ul), itemLength = li.size(), curr = o.start;
		div.css("visibility", "visible");
		
		li.css({overflow: "hidden"});
		ul.css({margin: "0", padding: "0", position: "relative", "list-style-type": "none", "z-index": "1"});
		div.css({overflow: "hidden", position: "relative", "z-index": "2", left: "0px"});
		
		var liSize = height(li);  
		var ulSize = liSize * itemLength;                  
		var divSize = liSize * v;                          
		
		li.css({width: li.width(), height: li.height()});
		ul.css(sizeCss, ulSize+"px").css(animCss, -(curr*liSize));
	
		div.css(sizeCss, divSize+"px");                   
	
		if(o.btnPrev)
			$(o.btnPrev).click(function() {
				return go(curr-o.scroll);
			});
	
		if(o.btnNext)
			$(o.btnNext).click(function() {
				return go(curr+o.scroll);
			});
	
		if(o.auto)
			setInterval(function() {
				go(curr+o.scroll);
			}, o.auto+o.speed);
	
		function vis() { return li.slice(curr).slice(0,v); };
	
		function go(to) {
			if(!running) {
				if(to<=o.start-v-1) {   
					ul.css(animCss, -((itemLength-(v*2))*liSize)+"px");
					curr = to==o.start-v-1 ? itemLength-(v*2)-1 : itemLength-(v*2)-o.scroll;
				} else if(to>=itemLength-v+1) { 
					ul.css(animCss, -( (v) * liSize ) + "px" );
					curr = to==itemLength-v+1 ? v+1 : v+o.scroll;
				} else curr = to;
				
				running = true;
	
				ul.animate(
					animCss == "left" ? { left: -(curr*liSize) } : { top: -(curr*liSize) } , o.speed, o.easing,
					function() { running = false; }
				);
			}
			return false;
		};
	});
};

function css(el, prop) {
    return parseInt($.css(el[0], prop)) || 0;
};

// CCI—p
function height(el) {
    return el[0].offsetHeight + css(el, 'marginTop') + css(el, 'marginBottom');
};

})(jQuery);