记得以前只会用IE里面的图片切换特效，后台由于接触到不同的浏览器发现，原来只有IE支持。现在终于有了个支持所有浏览器的图片切换特效。让我们开始吧
js图片多功能切换效果,实例特效中有（百页窗，屏幕中间向两边变化，左上角往右下角变化，方格变化）
链接与图片是分开的，其实此特效图片只是用来作为背景，然后不停地切换，而且b的class作为链接b的内容作为title也是不停的切换。这样大家使用起来比较方法！代码如下:
<a href="#1" id="changePIC" title="ad1">
<b class="#1">ad1</b><!--class为链接，ad1内容为title-->
<b class="#2">ad2</b><!--class为链接，ad2内容为title-->
<img src="http://pic14.nipic.com/20110602/5194143_135353365000_2.jpg"/>
<img src="http://webdesign365.net/images/banner4.gif"/>
<div id="maskFx"></div>
</a>
其实链接与图片是顺序是相同的。从前到后，只要对应就好，还可以这样写:
<a href="#1" id="changePIC" title="ad1">
<img src="http://pic14.nipic.com/20110602/5194143_135353365000_2.jpg"/>
<b class="#1">ad1</b><!--class为链接，ad1内容为title-->
<img src="http://webdesign365.net/images/banner4.gif"/>
<b class="#2">ad2</b><!--class为链接，ad2内容为title-->
<div id="maskFx"></div>
</a>
好了现在贴完整代码给大家：
<!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=gb2312" />
<title>js图片多功能切换效果</title>
<style>
#banner{height:240px;width:1000px;overflow:hidden;position:relative;margin:0 auto;border:1px solid #ccc;border-radius:5px;}
#banner a{border:none;width:1000px;height:240px;cursor:pointer;}
#banner a img{display:none;width:1000px;height:240px;}
#banner a b{display:none;}
#maskFx{position:absolute;width:100%;height:100%;overflow:hidden;}
#maskFx .range{float:left;display:inline;position:relative;}
#maskFx .range div{position:absolute; left:0;top:0;}
.pageBar{display:none;}
</style>
</head>
<body>
<div id="banner">
<a href="#1" id="changePIC" title="ad1">
<b class="#1">ad1</b><!--class为链接，ad1内容为title-->
<b class="#2">ad2</b><!--class为链接，ad2内容为title-->
<img src="http://pic14.nipic.com/20110602/5194143_135353365000_2.jpg"/>
<img src="http://webdesign365.net/images/banner4.gif"/>
<div id="maskFx"></div>
</a>
</div>
</body>
</html>
<script>
Tpl={
w:1000,h:240,
__clip__:function (el,x,y,w,h){
var _=[y,w,h,x];
for(var i=_.length;i--;)_[i]=_[i]<0?"auto":_[i]+"px";
el.style.clip="rect("+_.join(" ")+")";
},
__timeLine__:function (play,end,len) {
var play=play||Date,end=end||Date,s=0,t=0,len=(len||480)/10,th,p=Math.pow,
fx=function(x){return x},c=function(f,t){return +f+(t-f)*s};
return th=setInterval(function(){play(c,s=fx(t++/len));if(s==1)end(clearInterval(th))},10);
},
__createMask__:function (){
var ranges=[],masks=[],r,c;
for(var i=0;i<32;i++){
r=document.createElement("DIV");
r.className="range";
masks.push(r.appendChild(document.createElement("DIV")));
ranges.push(this.MaskDIV.appendChild(r))
};
this.masks=masks;
this.ranges=ranges
},
__setMask__:function (bgImg,col,row){
var a,b,w=Math.ceil(this.w/col),h=Math.ceil(this.h/row),l=this.ranges.length;
this.uw=w;
this.uh=h;
this.actCount=Math.min(col*row,l);
for(var i=0;i<l;i++){
a=this.ranges[i].style;
b=this.masks[i].style;
b.width=a.width=w+"px";
b.height=a.height=h+"px";
b.background="url("+bgImg+")";
b.backgroundPosition=(-i%col)*w+"px "+parseInt(-i/col)*h+"px";
b.clip="rect(0 0 0 0)";
//alert(i);
if(i==col*row-1)break
};
},
__fxs__:[
function (el,x){this.__clip__(el,x(this.uw,0),x(this.uh,0),x(0,this.uw),x(0,this.uh))},
function (el,x){this.__clip__(el,x(this.uw,0),-1,x(0,this.uw),-1)},
function (el,x){this.__clip__(el,-1,x(this.uh,0),-1,x(0,this.uh))},
function (el,x){this.__clip__(el,-1,-1,-1,x(0,this.uh))},
function (el,x){this.__clip__(el,-1,-1,x(0,this.uw),-1)},
function (el,x){this.__clip__(el,-1,-1,x(0,this.uw),x(0,this.uh))},
function (el,x){this.__clip__(el,x(this.uw,0),x(this.uh,0),-1,-1)}
]
};
imgFx=function (shell,mask){
var arrImgs=shell.getElementsByTagName("IMG");
var spb=document.getElementById("banner").getElementsByTagName("b");
var pageBar=document.createElement("DIV");
pageBar.className='pageBar';
var num,timer,nextTimer,hover;
this.nums=[];
shell.appendChild(pageBar);
var This=this,pos=0,len=arrImgs.length;
This.shell=shell;
This.MaskDIV=mask;
This.uw=This.w;
This.uh=This.h;
This.__createMask__();
var Case=[[32,1,1],[32,1,1],[1,1,5],[1,1,6],[1,1,1],[1,1,2],[1,8,2],[1,1,0],[1,1,5],[4,2,0],[8,3,0],[1,1,3],[1,1,4]];
var start=function (){
var cur=arrImgs[pos%len].src,index=Math.round((Case.length-1)*Math.random());
var opt=Case[index];
if(This.prevNum)This.prevNum.className="";
This.prevNum=This.nums[pos%len];
This.prevNum.className="current";
This.__setMask__(cur,opt[0],opt[1]);
timer=This.__timeLine__(function (x){
for(var i=This.actCount;i--;){
This.__fxs__[opt[2]].call(This,This.masks[i],x)
};
},function (){
This.shell.style.background="url("+cur+")";
This.shell.href=spb[pos%spb.length].className;
This.shell.title=spb[pos%spb.length].innerHTML;
//alert(spb[pos%spb.length].className);
pos++;
if(!hover)nextTimer=setTimeout(start,5000);
});
};
for(var i=0,l=arrImgs.length;i<l;i++){
num=document.createElement("A");
num.href="javascript:void(0)";
num.innerHTML=(i+1);
this.nums.push(pageBar.appendChild(num));
num.numIndex=i;
num.onclick=function (){
pos=this.numIndex;
clearTimeout(timer);
clearTimeout(nextTimer);
start()
}
};
start()
};
imgFx.prototype=Tpl;
try {document.execCommand("BackgroundImageCache", false, true);}catch(e){};
var _51Fx=new imgFx(
document.getElementById("changePIC"),
document.getElementById("maskFx")
);
</script>
当然大家可以在此基础上修改成自己想要的效果。如果有什么BUG或什么更好的建议可以留言或联系我charrysong#qq.com
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