点击按钮实现轮播切换

HTML：

<div class="con3_con">
            	<div class="button_left" id="button_left">
                	<a href="javascript:void(0)"><img src="images/btn_left.png"></a>
                </div>
                <div class="button_con" style="visibility: visible; overflow: hidden; position: relative; z-index: 2; left: 0px; float: left; width:1050px;">
                	<ul style="margin: 0px; padding: 0px; position: relative; list-style-type: none; z-index: 1; width: 3420px; height:71px; left: -795px;">
                		<li><a href="#"><img src="images/1.jpg"></a></li>
                        <li><a href="#"><img src="images/2.jpg"></a></li>
                        <li><a href="#"><img src="images/3.jpg"></a></li>
                        <li><a href="#"><img src="images/4.jpg"></a></li>
                        <li><a href="#"><img src="images/5.jpg"></a></li>
                        <li><a href="#"><img src="images/6.jpg"></a></li>
                        <li><a href="#"><img src="images/7.jpg"></a></li>
                        <li><a href="#"><img src="images/8.jpg"></a></li>
                        <li><a href="#"><img src="images/9.jpg"></a></li>
                        <li><a href="#"><img src="images/1.jpg"></a></li>
                        <li><a href="#"><img src="images/2.jpg"></a></li>
                        <li><a href="#"><img src="images/3.jpg"></a></li>
                        <li><a href="#"><img src="images/4.jpg"></a></li>
                        <li><a href="#"><img src="images/5.jpg"></a></li>
                        <li><a href="#"><img src="images/6.jpg"></a></li>
                        <li><a href="#"><img src="images/7.jpg"></a></li>
                        <li><a href="#"><img src="images/8.jpg"></a></li>
                        <li><a href="#"><img src="images/9.jpg"></a></li>
                        <li><a href="#"><img src="images/1.jpg"></a></li>
                        <li><a href="#"><img src="images/2.jpg"></a></li>
                        <li><a href="#"><img src="images/3.jpg"></a></li>
                        <li><a href="#"><img src="images/4.jpg"></a></li>
                        <li><a href="#"><img src="images/5.jpg"></a></li>
                        <li><a href="#"><img src="images/6.jpg"></a></li>
                        <li><a href="#"><img src="images/7.jpg"></a></li>
                        <li><a href="#"><img src="images/8.jpg"></a></li>
                        <li><a href="#"><img src="images/9.jpg"></a></li>
                        <li><a href="#"><img src="images/1.jpg"></a></li>
                        <li><a href="#"><img src="images/2.jpg"></a></li>
                        <li><a href="#"><img src="images/3.jpg"></a></li>
                        <li><a href="#"><img src="images/4.jpg"></a></li>
                        <li><a href="#"><img src="images/5.jpg"></a></li>
                        <li><a href="#"><img src="images/6.jpg"></a></li>
                        <li><a href="#"><img src="images/7.jpg"></a></li>
                        <li><a href="#"><img src="images/8.jpg"></a></li>
                        <li><a href="#"><img src="images/9.jpg"></a></li>

                    	
                	</ul>
                </div>
                
                <div class="button_right" id="button_right">
                	<a href="javascript:void(0)"><img src="images/btn_right.png"></a>
                </div>
            
</div>

css：

.button_con ul li{float:left;overflow: hidden; width:115px; height:70px;}

js：

$(".button_con").jCarouselLite({	
	btnNext: ".button_right",
	btnPrev: ".button_left"
	});

Irscroll.js:

(function($){$.fn.jCarouselLite=function(o){o=$.extend({btnPrev:null,btnNext:null,btnGo:null,mouseWheel:false,auto:null,speed:500,easing:null,vertical:false,circular:true,visible:9,start:0,scroll:1,beforeStart:null,afterEnd:null},o||{});return this.each(function(){var b=false,animCss=o.vertical?"top":"left",sizeCss=o.vertical?"height":"width";var c=$(this),ul=$("ul",c),tLi=$("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 f=$("li",ul),itemLength=f.size(),curr=o.start;c.css("visibility","visible");f.css({overflow:"hidden",float:o.vertical?"none":"left"});ul.css({margin:"0",padding:"0",position:"relative","list-style-type":"none","z-index":"1"});c.css({overflow:"hidden",position:"relative","z-index":"2",left:"0px"});var g=o.vertical?height(f):width(f);var h=g*itemLength;var j=g*v;f.css({width:f.width(),height:f.height()});ul.css(sizeCss,h+"px").css(animCss,-(curr*g));c.css(sizeCss,j+"px");if(o.btnPrev)$(o.btnPrev).click(function(){return go(curr-o.scroll)});if(o.btnNext)$(o.btnNext).click(function(){return go(curr+o.scroll)});if(o.btnGo)$.each(o.btnGo,function(i,a){$(a).click(function(){return go(o.circular?o.visible+i:i)})});if(o.mouseWheel&&c.mousewheel)c.mousewheel(function(e,d){return d>0?go(curr-o.scroll):go(curr+o.scroll)});if(o.auto)setInterval(function(){go(curr+o.scroll)},o.auto+o.speed);function vis(){return f.slice(curr).slice(0,v)};function go(a){if(!b){if(o.beforeStart)o.beforeStart.call(this,vis());if(o.circular){if(a<=o.start-v-1){ul.css(animCss,-((itemLength-(v*2))*g)+"px");curr=a==o.start-v-1?itemLength-(v*2)-1:itemLength-(v*2)-o.scroll}else if(a>=itemLength-v+1){ul.css(animCss,-((v)*g)+"px");curr=a==itemLength-v+1?v+1:v+o.scroll}else curr=a}else{if(a<0||a>itemLength-v)return;else curr=a}b=true;ul.animate(animCss=="left"?{left:-(curr*g)}:{top:-(curr*g)},o.speed,o.easing,function(){if(o.afterEnd)o.afterEnd.call(this,vis());b=false});if(!o.circular){$(o.btnPrev+","+o.btnNext).removeClass("disabled");$((curr-o.scroll<0&&o.btnPrev)||(curr+o.scroll>itemLength-v&&o.btnNext)||[]).addClass("disabled")}}return false}})};function css(a,b){return parseInt($.css(a[0],b))||0};function width(a){return a[0].offsetWidth+css(a,'marginLeft')+css(a,'marginRight')};function height(a){return a[0].offsetHeight+css(a,'marginTop')+css(a,'marginBottom')}})(jQuery);

其中visible是图标显示个数