
(function($) {                                          /* Compliant with jquery.noConflict()*/
$.fn.jCarouselLite = function(o) {	
    o = $.extend({
        btnPrev: null,
        btnNext: null,
        btnGo: null,
        mouseWheel: false,
        auto: null,
        autoHandler: null,

        speed: 300,
        easing: null,

        vertical: false,
        circular: true,
        visible: 3,
        start: 0,
        scroll: 1,
        dontWait:false, /* this is added so that on tyre selector you want to use top pagination it scroll more views at once */
        beforeStart: null,
        afterEnd: null,
        init: null, /* this was added so we can return the o object to the calling parent as a callback*/
        
        updateControls: false,
        endless: false,
        endlessHandler: null
    }, o || {});
        
    return this.each(function() {                           /* Returns the element collection. Chainable.*/

        var running = false, animCss=o.vertical?"top":"left", 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" : "left"});*/
/*        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);   /* Full li size(incl margin)-Used for animation*/
        var ulSize = liSize * itemLength;                   /* size of full ul(total length, not just for the visible items)*/
        var divSize = liSize * v;                           /* size of entire div(total length for just the visible items)*/

/*		li.css({width: li.width()});*/
        ul.css(sizeCss, ulSize+"px").css(animCss, -(curr*liSize));

        div.css(sizeCss, divSize+"px");                     /* Width of the DIV. length of visible images*/
                       
        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.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)
            o.autoHandler = setInterval(function() {
                go(curr+o.scroll);
            }, o.auto+o.speed);

        function vis() {
            return li.slice(curr).slice(0,v);
        };

        function go(to) 
        {
        	if ( (!running) || (o.dontWait) ) 
            {           		
        		if(o.endless && o.endlessHandler){
        			clearInterval(o.endlessHandler);
        			o.endlessHandler = null;
        		}
        		
        		if(o.auto && o.autoHandler){
        			clearInterval(o.autoHandler);
        			o.autoHandler = setInterval(function() {
                        go(curr+o.scroll);
                    }, o.auto+o.speed);
        		}
        		
                if(o.beforeStart)   
                    o.beforeStart.call(this, vis(), to);                

                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 == "left" ? { left: -(curr*liSize) } : { top: -(curr*liSize) } , o.speed, o.easing,
                    function() 
                    {
                        if(o.afterEnd)
                            o.afterEnd.call(this, vis(), to);
                            
                        if(o.updateControls) {
                            $("a[id^=accordion-control]").removeClass('current');
                            $("#accordion-control-" + (curr + 1)).addClass('current');
                        }
                        running = false;
                    }
                );
                
                /* Disable buttons when the carousel reaches the last/first, and enable when not*/
                if(!o.circular) {
                    $(o.btnPrev + "," + o.btnNext).removeClass("disabled");
                    $( (curr-o.scroll<0 && o.btnPrev)
                        ||
                       (curr+o.scroll > itemLength-v && o.btnNext)
                        ||
                       []
                     ).addClass("disabled");
                }
                
                if(o.endless) {
                    if(curr+o.scroll > itemLength-v) {
                    	o.endlessHandler = setTimeout(function() {
                            $("#accordion-control-1").trigger('click');
                        }, o.auto)                        
                    }
                }

            }
            return false;
        };     
      /*pass jCarouselObject to the calling object*/
        if(o.init){
        	o.init.call(this, o, go);
        }
    });    
};

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);
