图片切换的幻灯效果，带滑动文字层

脚本代码

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>滑动说明文字</title>
<style type="text/css" media="all">
.bg{border:#999999 3px solid;width:207px;height:106px;position:relative;overflow:hidden;float:left;margin-right:6px;}
.img{background-image:url(/Pri_upfile/jspic/2009/slide_intro.jpg);width:207px;height:106px;}
.txt{width:197px;height:96px;background-color:#000000;position:absolute;top:106px;left:0px;color:#FFCC33;line-height:22px;padding:5px;font-size:12px;}
</style>
<script language="javascript" type="text/javascript">
/******************************
Power By:http://www.wxwdesign.cn
*******************************/
var div=document.getElementsByTagName("div");
var elem=new Array();    //存储已经初始化的对象
var status=new Array();  //存储对象状态
var interval=10;         //滑动速度
var opacity=69;          //内容图层透明度
//run_animation
var d=function(){
var timer=0,div;
var ypos=100;
this.go_up=function(con,target){timer=setInterval(con.up,interval);div=target;div.style.filter="alpha(opacity="+opacity+")";div.style.opacity=opacity/100;}
this.go_down=function(con){timer=setInterval(con.down,interval)}
this.up=function(){if(ypos<=0){clearInterval(timer);div.style.top="0px";}else{ypos-=10;div.style.top=ypos+"px";}}
this.down=function(){if(ypos>=106){clearInterval(timer);div.style.top="106px";}else{ypos+=10;div.style.top=ypos+"px";}}
this.pause=function(){clearInterval(timer);}
}
//start
var c={
up:function(tar){if(status[tar]==tar){elem[tar].pause();elem[tar].go_up(elem[tar],div[tar]);}else{var n=tar;tar=new d();elem[n]=tar;status[n]=n;tar.go_up(tar,div[n]);}},
pause:function(tar){elem[tar].pause();},
down:function(tar){if(elem[tar]!=undefined){elem[tar].pause();elem[tar].go_down(elem[tar])}}
}
//initial
window.onload=function(){for(var i=0;i<div.length;i+=3){div[i+1].index=div[i+2].index=i+2;div[i+1].onmouseover=function(){c.up(this.index)};div[i+2].onmouseout=function(){c.down(this.index)}}}
</script>
</head>
<body>
<div class="bg">
<div class="img"></div>
<div class="txt">图片1：<br />下面是测试说明1，文字内容1。</div>
</div>
<div class="bg">
<div class="img"></div>
<div class="txt">图片22：<br />下面是测试说明2，<a href="http://www.2ky.cn">共享世纪</a>。</div>
</div>
<div class="bg">
<div class="img"></div>
<div class="txt">图片333：<br />下面是测试说明4，文字内容3。</div>
</div>
<div class="bg">
<div class="img"></div>
<div class="txt">图片44444：<br />下面是测试说明4，文字内容4。</div>
</div>
</body>
</html>

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