从两侧向中间拼合的JavaScript图片切换效果_图片特效特效

从两侧向中间拼合的JavaScript图片切换效果，请注意在调用图片的时候图片的长宽要和CSS里面设置的一样大，要不然出来的效果可能不太完美，源码爱好者的示例仅供参考，或许你真使用这款特效，你就会让它变得更美好了。

<!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" mrc="text/html; charset=gb2312" />
<title>从两侧向中间拼合的JavaScript图片切换效果</title>
<style type="text/css">
.d1{width:444px;height:auto;overflow:hidden;border:#666666 2px solid;background-color:#000000;position:relative;}
.left{width:222px;height:209px;overflow:hidden;position:absolute;z-index:500;top:0px;left:-222px;}
.right{width:222px;height:209px;overflow:hidden;position:absolute;z-index:503;background-position:right top;background-repeat:no-repeat;right:-222px;top:0px;}
.loading{width:444px;border:#666666 2px solid;background-color:#000000;color:#FFCC00;font-size:12px;height:179px;text-align:center;padding-top:30px;font-family:Verdana, Arial, Helvetica, sans-serif;font-weight:bold;}
.d2{width:100%;height:209px;overflow:hidden;}
.num_list{position:absolute;width:100%;left:0px;bottom:-1px;background-color:#000000;color:#FFFFFF;font-size:12px;padding:4px 0px;height:20px;overflow:hidden;z-index:1000;}
.num_list span{display:inline-block;height:16px;padding-left:6px;}
img{border:0px;}
ul{display:none;}
.button{position:absolute; z-index:1003; right:0px; bottom:2px; font-size:13px; font-weight:bold; font-family:Arial, Helvetica, sans-serif;}
.b1,.b2{background-color:#666666;display:block;float:left;padding:2px 6px;margin-right:3px;color:#FFFFFF;text-decoration:none;cursor:pointer;}
.b2{color:#FFCC33;background-color:#FF6633;}
</style>
<script language="javascript" type="text/javascript">
var s=function(){
var interv=2000; //切换时间
var interv2=10; //速速
var opac1=80; //文字背景透明度
var source="fade_focus" //焦点轮换容器id
function getTag(tag,obj){if(obj==null){return document.getElementsByTagName(tag)}else{return obj.getElementsByTagName(tag)}}
function getid(id){return document.getElementById(id)};
var opac=0,j=0,t=63,num=-2,scton=0,timer,timer2,timer3;
var id=getid(source);
id.removeChild(getTag("div",id)[0]);
var li=getTag("li",id);
var div=document.createElement("div");
var title=document.createElement("div");
var span=document.createElement("span");
var button=document.createElement("div");
var left=document.createElement("div");
var right=document.createElement("div");
button.className="button";
for(var i=0;i<li.length;i++){
var a=document.createElement("a");
a.innerHTML=i+1;
a.onclick=function(){clearTimeout(timer);clearTimeout(timer2);clearTimeout(timer3);j=parseInt(this.innerHTML)-2;t=63;slide();};
a.className="b1";
a.onmouseover=function(){this.className="b2"};
a.onmouseout=function(){this.className="b1";sc(j)};
button.appendChild(a);
}
//控制透明度
function alpha(obj,n){if(document.all){obj.style.filter="alpha(opacity="+n+")";}else{obj.style.opacity=(n/100);}}
//控制焦点按钮
function sc(n){for(var i=0;i<li.length;i++){button.childNodes[i].className="b1"};button.childNodes[n].className="b2";}
title.className="num_list";
title.appendChild(span);
alpha(title,opac1);
id.className="d1";
div.className="d2";
left.className="left";
right.className="right";
id.appendChild(div);
id.appendChild(left);
id.appendChild(right);
id.appendChild(title);
id.appendChild(button);
//滑动图片
var slide=function(){
    var im=-222;
	var k=21;	
	if(j<li.length-1){j++}else{j=0};
	change_dis(1);
	sc(j);
	left.style.backgroundImage="url("+getTag("img",li[j])[0].src+")";
	right.style.backgroundImage="url("+getTag("img",li[j])[0].src+")";
	function run(){
	   if(k>1){k--};
	   im+=k;
	   if(im>0){im=0};
	   left.style.left=String(im)+"px";
	   right.style.right=String(im)+"px";
	   if(im<0){timer=setTimeout(run,interv2)}else{span.innerHTML=getTag("img",li[j])[0].alt;scrolltxt();change_dis();timer2=setTimeout(slide,interv)}
	}
	run();
}
var change_dis=function(n){if(n>0){left.style.display="block";right.style.display="block";}else{left.style.display="none";right.style.display="none";div.innerHTML=li[j].innerHTML;}}
var scrolltxt=function(){t+=num;span.style.marginTop=t+"px";if(num<0&&t>3){timer3=setTimeout(scrolltxt,interv2)}else{t=63}};
slide();
}
//初始化
window.onload=s;
</script>
</head>

<body>
<div id="fade_focus">
    <div class="loading">Loading...<br /><img src="http://p1.mb5u.com/texiao/1/20110225160504301.gif" /></div>
    <ul>
      <li><img src="http://p1.mb5u.com/texiao/1/20110225160504302.jpg" alt="图片1的说明" /></li>
      <li><img src="http://p1.mb5u.com/texiao/1/20110225160504303.jpg" alt="图片2的说明" /></li>
      <li><img src="http://p1.mb5u.com/texiao/1/20110225160504304.jpg" alt="图片3的说明" /></li>
      <li><img src="http://p1.mb5u.com/texiao/1/20110225160504305.jpg" alt="图片4的说明" /></li>
    </ul>
</div>
</body>
</html>

所属频道：图片特效特效/更新时间：2012-11-29

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