一个实用的图片切换支持点击切换和自动轮播

<div class="scroll_div"><ul class="pic"><li><img src="img/pic_1.jpg" /></li><li><img src="img/pic_2.jpg" /></li><li><img src="img/pic_3.jpg" /></li><li><img src="img/pic_4.jpg" /></li><li><img src="img/pic_5.jpg" /></li></ul><ul class="btn"><li>项目一</li><li>项目二</li><li>项目三</li><li>项目四</li><li>项目五</li></ul></div>

.scroll_div{width:1000px; height:370px; margin:0 auto; padding:10px;}.scroll_div .pic{width:820px; height:370px; overflow:hidden; position:relative; float:left;}.scroll_div .pic li{width:820px; height:370px; position:absolute; top:0; left:0; display:none;}.scroll_div .btn{float:right; width:173px;}.scroll_div .btn li{width:173px; height:66px; display:block; float:left; text-align:center; color:#fff; font:18px/100% "微软雅黑"; font-weight:bold; background:#008dd8; margin-bottom:10px; line-height:66px; cursor:pointer;}.scroll_div .btn li.on{background:#d73737;}li {list-style:none;}

$(function(){var listLen = $(".pic li").length, i=0,setInter,speen = 3000;/*图片轮播*/$(".btn li:last").css({"margin":"0px 0px 0px 0px"});$(".btn li:first").addClass("on");$(".pic li:first").show();$(".btn li").each(function(index,element){$(element).click(function(){i = index;$(this).addClass("on").siblings().removeClass("on");$(".pic li").eq(index).animate({opacity:"show"},300).siblings().animate({opacity:"hide"},300);})$(element).hover(function(){clearInterval(setInter);},function(){outPlay();});})out_fun = function(){if(i < listLen){i++;}else{i=0;};$(".btn li").eq(i).addClass("on").siblings().removeClass("on");$(".pic li").eq(i).animate({opacity:"show"},300).siblings().animate({opacity:"hide"},300);}outPlay = function(){setInter = setInterval("out_fun()",speen);}outPlay();})