//*�����л�
(function(){
if(!function.prototype.bind){
function.prototype.bind = function(obj){
var owner = this,args = array.prototype.slice.call(arguments),callobj = array.prototype.shift.call(args);
return function(e){e=e||top.window.event||window.event;owner.apply(callobj,args.concat([e]));};
};
}
})();
var player = function(id){
this.ctn = document.getelementbyid(id);
this.adlis = null;
this.btns = null;
this.animstep = 0.2;//�����ٶ�0.1��0.9
this.switchspeed = 3;//�զ����ż��(s)
this.defopacity = 1;
this.tmpopacity = 1;
this.crtindex = 0;
this.crtli = null;
this.adlength = 0;
this.timeranim = null;
this.timerswitch = null;
this.init();
};
player.prototype = {
fnanim:function(toindex){
if(this.timeranim){window.cleartimeout(this.timeranim);}
if(this.tmpopacity <= 0){
this.crtli.style.opacity = this.tmpopacity = this.defopacity;
this.crtli.style.filter = 'alpha(opacity=' + this.defopacity*100 + ')';
this.crtli.style.zindex = 0;
this.crtindex = toindex;
return;
}
this.crtli.style.opacity = this.tmpopacity = this.tmpopacity - this.animstep;
this.crtli.style.filter = 'alpha(opacity=' + this.tmpopacity*100 + ')';
this.timeranim = window.settimeout(this.fnanim.bind(this,toindex),50);
},
fnnextindex:function(){
return (this.crtindex >= this.adlength-1)?0:this.crtindex+1;
},
fnswitch:function(toindex){
if(this.crtindex==toindex){return;}
this.crtli = this.adlis[this.crtindex];
for(var i=0;i<this.adlength;i++){
this.adlis[i].style.zindex = 0;
}
this.crtli.style.zindex = 2;
this.adlis[toindex].style.zindex = 1;
for(var i=0;i<this.adlength;i++){
this.btns[i].classname = '';
}
this.btns[toindex].classname = 'on'
this.fnanim(toindex);
},
fnautoplay:function(){
this.fnswitch(this.fnnextindex());
},
fnplay:function(){
this.timerswitch = window.setinterval(this.fnautoplay.bind(this),this.switchspeed*1000);
},
fnstopplay:function(){
window.cleartimeout(this.timerswitch);
},
init:function(){
this.adlis = this.ctn.getelementsbytagname('li');
this.btns = this.ctn.getelementsbytagname('cite')[0].getelementsbytagname('span');
this.adlength = this.adlis.length;
for(var i=0,l=this.btns.length;i<l;i++){
with({i:i}){
this.btns[i].index = i;
this.btns[i].onclick = this.fnswitch.bind(this,i);
this.btns[i].onclick = this.fnswitch.bind(this,i);
}
}
this.adlis[this.crtindex].style.zindex = 2;
this.fnplay();
this.ctn.onmouseover = this.fnstopplay.bind(this);
this.ctn.onmouseout = this.fnplay.bind(this);
}
};
var player1 = new player('player');

<!--/*����ͼ�л�js����*/-->