(function( $ ){
	 $.fn.Slider = function(o) {
      o = $.extend({
        btnPrev: null,
        btnNext: null,
        btnGo: null,
        mouseWheel: false,
        auto: null,

        speed: 200,
        easing: null,

        vertical: false,
        circular: true,
        visible: 1,
        start: 0,
        scroll: 1,
		
		smallVisible:0,
		smallDiv:null,
		smallNext:null,
		smallPrev:null,
		smallScroll: 6,
		smallStart: 0,
		smallbeforeStart: null,
		smallafterEnd:null,

        beforeStart: null,
        afterEnd: 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(), height: li.height()});
        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,-1);
            });

        if(o.btnNext)
            $(o.btnNext).click(function() {
                return go(curr+o.scroll,1);
            });

        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)
            setInterval(function() {
                go(curr+o.scroll);
            }, o.auto+o.speed);

        function vis() {
            return li.slice(curr).slice(0,v);
        };
		
		$(o.smallDiv+" li").click(function() {
				curr = $(this).attr("class");
				curr++;
                ul.css({left: -(curr*liSize)}); 
         
			});
		

        function go(to,dir) {
            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;
							if (dir == 1)
								{
								if (curr % o.smallVisible == 1) 
									{
										if (tl >= o.smallVisible)
										{
										smallSlidergo(to+o.smallVisible-1);
										}
									}
								}
							else
								{
									if (curr % o.smallVisible == 0)
									{
									if (tl >= o.smallVisible)
										{
										smallSlidergo(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());
                        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");
                }

            }
            return false;
        };
/*----------------------------------------------------------------smallDiv--------------------------------------------------------*/
			
			var srunning = false, sanimCss=o.vertical?"top":"left", ssizeCss=o.vertical?"height":"width";
			var sdiv = $(o.smallDiv), sul = $("ul", sdiv), stLi = $("li", sul), stl = stLi.size(),sv = o.smallVisible; 
			
			if(o.circular) {
				sul.prepend(stLi.slice(stl-sv-1+1).clone())
				  .append(stLi.slice(0,sv).clone());
				o.smallStart += sv;
			 }
			  
			 var sli = $("li", sul), sitemLength = sli.size(), scurr = o.smallStart; 
			 sdiv.css("visibility", "visible");
			 
			 sli.css({overflow: "hidden", float: o.vertical ? "none" : "left"});
			 sul.css({margin: "0", padding: "0", position: "relative", "list-style-type": "none", "z-index": "1"});
			 sdiv.css({overflow: "hidden", position: "relative", "z-index": "2", left: "0px"}); 
			 
			var sliSize = o.vertical ? height(sli) : width(sli);   // Full li size(incl margin)-Used for animation
			var sulSize = sliSize * sitemLength;                   // size of full ul(total length, not just for the visible items)
			var sdivSize = sliSize * sv; 
			
				sli.css({width: sli.width(), height: sli.height()});
				sul.css(sizeCss, sulSize+"px").css(sanimCss, -(scurr*sliSize));
		
				sdiv.css(sizeCss, sdivSize+"px"); 
				
		
		  if(o.smallPrev)
            $(o.smallPrev).click(function() {
				if (stl >= o.smallScroll)
				{
					return smallSlidergo(scurr-o.smallScroll);
				}	
            });	
			
		  if(o.smallNext)
            $(o.smallNext).click(function() {
				if (stl >= o.smallScroll)
				{
                return smallSlidergo(scurr+o.smallScroll);
				}
            });	
		
		  function smallSlidergo(to) {
            if(!srunning) {
                if(o.smallbeforeStart)
                    o.smallbeforeStart.call(this, vis());

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

                srunning = true;
                sul.animate(
                    sanimCss == "left" ? { left: -(scurr*sliSize) } : { top: -(scurr*sliSize) } , o.speed, o.easing,
                    function() {
                        if(o.smallafterEnd)
                            o.smallafterEnd.call(this, vis());
                        srunning = false;
                    }
                );
                // Disable buttons when the carousel reaches the last/first, and enable when not
                if(!o.circular) {
                    $(o.smallPrev + "," + o.smallNext).removeClass("disabled");
                    $( (scurr-o.smallScroll<0 && o.smallPrev)
                        ||
                       (scurr+o.smallScroll > sitemLength-sv && o.smallNext)
                        ||
                       []
                     ).addClass("disabled");
                }

            }
            return false;
        };		
/*------------------------------------------------------------------smallDiv--------------------------------------------------------*/		
		
    });	      	
  };
  
	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 );