(function($){
	$.fn.jCarouselLite = function(o){o = $.extend({btnPrev: null, btnNext: null, btnGo: null, mouseWheel: true, auto: null, speed: 2000, easing: null, vertical: false, circular: true, visible: 1, start: 1, scroll: 1, beforeStart: null, afterEnd: null, type: 1}, o || {});
	var timeout;
	var timedelay;
	var pre;
    return this.each(function() {
        var running = false, animCss=o.vertical?"top":"right", sizeCss=o.vertical?"height":"width";
        var div = $(this), ul = $("ul", div), tLi = $("li", ul), tl = tLi.size(), v = o.visible;
        if(o.circular) {
            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", float: o.vertical ? "none" : "right"});
        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 = o.vertical ? height(li) : width(li);
        var ulSize = liSize * itemLength;
        var divSize = liSize * v;
		
        li.css({width: li.width(), height: li.height()+50});
        ul.css(sizeCss, ulSize+"px").css(animCss, -(curr*liSize));

        div.css(sizeCss, divSize+"px");

        if(o.btnPrev){
			 $(o.btnPrev).hover(function() {
					o.scroll = 3;
					clearInterval(timeout);
					timeout = setInterval(function() {
					go(curr - o.scroll);
				}, o.auto + o.speed);
			 }, function () {				 	
				 	clearInterval(timeout);
					
					if (o.auto > 0) {
					o.scroll = 1;
						timeout = setInterval(function() {
							go(curr - o.scroll);
						}, o.auto + o.speed);
					}
			 });
		}

        if(o.btnNext){
			 $(o.btnNext).hover(function() {
					o.scroll = 3;
					clearInterval(timeout);
					timeout = setInterval(function() {
					go(curr + o.scroll);
				}, o.auto + o.speed);
			 }, function () {
				 	clearInterval(timeout);
					
					if (o.auto > 0) {
				 	o.scroll = 1;				 	
						timeout = setInterval(function() {
							go(curr + o.scroll);
						}, o.auto + o.speed);
					}
			 });
		}
		
        if(o.btnGo)
            $.each(o.btnGo, function(i, val) {
                $(val).click(function() {
                    return go(o.circular ? o.visible+i : i);
                });
            });

        if(o.mouseWheel && div.mousewheel)
            div.mousewheel(function(e, d) {
                return d>0 ? go(curr-o.scroll) : go(curr+o.scroll);
            });
		
        if(o.auto){
            timeout = setInterval(function() {
                go(curr + o.scroll);
            }, o.auto + o.speed);
            
            $(this).find('li').hover(
                function () {
                    clearInterval(timeout);    
                },
                function () {
                    o.scroll = 1;
                         clearInterval(timeout);
                        timeout = setInterval(function() {
                        go(curr + o.scroll);
                    }, o.auto + o.speed);
                }
            );
        
        }else{
            $(this).find('li').hover(
                function () {
                    clearInterval(timeout);    
                },
                function () {
                    clearInterval(timeout); 
                }
            );
        }    
        // -- modify 25/09/2009
        
        function vis() {
            return li.slice(curr).slice(0,v);
        };		
		
		
        function go(to) {
            if(!running) {

                if(o.beforeStart)
                    o.beforeStart.call(this, vis());

                if(o.circular) {            // If circular we are in first or last, then goto the other end
                    if(to<=o.start-v-1) {           // If first, then goto last
                        ul.css(animCss, -((itemLength-(v*2))*liSize)+"px");
                        // If "scroll" > 1, then the "to" might not be equal to the condition; it can be lesser depending on the number of elements.
                        curr = to==o.start-v-1 ? itemLength-(v*2)-1 : itemLength-(v*2)-o.scroll;
                    } else if(to>=itemLength-v+1) { // If last, then goto first
                        ul.css(animCss, -( (v) * liSize ) + "px" );
                        // If "scroll" > 1, then the "to" might not be equal to the condition; it can be greater depending on the number of elements.
                        curr = to==itemLength-v+1 ? v+1 : v+o.scroll;
                    } else curr = to;
                } else {                    // If non-circular and to points to first or last, we just return.
                    if(to<0 || to>itemLength-v) return;
                    else curr = to;
                }                           // If neither overrides it, the curr will still be "to" and we can proceed.

                running = true;

                ul.animate(
                    animCss == "right" ? { left: -(curr*liSize) } : { top: -(curr*liSize) } , o.speed, o.easing,
                    function() {
                        if(o.afterEnd)
                            o.afterEnd.call(this, vis());
                        running = false;
                    }
                );
                if(!o.circular) {
                    $(o.btnPrev + "," + o.btnNext).removeClass("disabled");
                    $( (curr-o.scroll<0 && o.btnPrev)
                        ||
                       (curr+o.scroll > itemLength-v && o.btnNext)
                        ||
                       []
                     ).addClass("disabled");
                }

            }
            return false;
        };
    });
};

function css(el, prop) {
    return parseInt($.css(el[0], prop)) || 0;
};
function width(el) {
    return  el[0].offsetWidth + css(el, 'marginLeft') + css(el, 'marginRight');
};
function height(el) {
    return el[0].offsetHeight + css(el, 'marginTop') + css(el, 'marginBottom');
};

})(jQuery);