var self;var $$=function(id){return"string"==typeof id?document.getElementById(id):id};var Extend=function(target,source){for(var property in source){target[property]=source[property]};return target};imgSwitch=function(container,options){self=this;this._container=$$(container);this.setOptions(options);this.Auto=this.options.Auto;this.Pause=this.options.Pause;this.Type=this.options.Type;this.Navigate=this.options.Navigate;this.Width=this.options.Width;this.Height=this.options.Height;this.Speed=this.options.Speed=="fast"?10:this.options.Speed=="slow"?20:this.options.Speed.match(/\D/g)?15:this.options.Speed;this.PicturePosition=this.options.PicturePosition;this.NavigatePlace=this.options.NavigatePlace;this.arrImgs=this._container.getElementsByTagName("img");this.index=0;this.Case=[[32,1,1],[4,4,2],[16,1,1],[1,1,0],[1,1,1],[1,1,2],[1,1,3],[1,1,4],[1,1,5],[1,1,6],[1,8,2],[4,2,2],[4,2,0],[8,3,0],[4,2,5],[4,1,5],[4,1,3],[1,4,4]];this.pos=0;this.nums=[];this.len=this.arrImgs.length;this.timer=null;this.nexttimer=null;this.count=0;this.flag=false;this.createMask();this.createPagebar();this.start()};imgSwitch.prototype={setOptions:function(options){this.options={Auto:true,Pause:3000,Type:1,Navigate:"numberic",Width:874,Height:211,Speed:"normal",PicturePosition:"inner",NavigatePlace:"inner"};Extend(this.options,options||{})},createMask:function(){var imgMask=document.createElement("DIV");imgMask.id="imgMask";this._mask=imgMask;var ranges=[],masks=[],range;for(var i=0;i<32;i++){range=document.createElement("DIV");range.className="range";masks.push(range.appendChild(document.createElement("DIV")));ranges.push(this._mask.appendChild(range))};this.masks=masks;this.ranges=ranges;this._container.appendChild(this._mask)},setMask:function(bigImg,col,row){var a,b,w=Math.floor(this.Width/col),h=Math.floor(this.Height/row),l=this.ranges.length;this.maskWidth=w;this.maskHeight=h;this.actCount=Math.min(l,row*col);for(var i=0;i<l;i++){a=this.ranges[i].style;b=this.masks[i].style;a.width=b.width=this.maskWidth+"px";a.height=b.height=this.maskHeight+"px";b.background="url("+bigImg+")";b.backgroundPosition=(-i%col)*w+"px "+parseInt(-i/col)*h+"px";b.clip="rect(0 0 0 0)";if(i==col*row-1)break}},timeLine:function(play,end,len){var play=play||Date;var end=end||Date;var len=(len||480)/10;fx=function(x){return x};var s=0;t=0;c=function(f,t){return+f+(t-f)*(s>1?s-Math.floor(s)==0?1:s-Math.floor(s):s)};var exit;if(this.index<14){exit=1}else{exit=this.actCount};return th=setInterval(function(){if(this.index<14){play(c,s=t++/len)};if(s==exit){end(clearInterval(th))}else{play(c,s=t++/len)}},this.Speed)},fxs:[function(el,x){this.clipDiv(el,x(this.maskHeight,0),x(0,this.maskWidth),x(0,this.maskHeight),x(this.maskWidth,0))},function(el,x){this.clipDiv(el,-1,x(0,this.maskWidth),-1,x(this.maskHeight,0))},function(el,x){this.clipDiv(el,x(this.maskHeight,0),-1,x(0,this.maskHeight),-1)},function(el,x){this.clipDiv(el,-1,-1,x(0,this.maskHeight),-1)},function(el,x){this.clipDiv(el,-1,x(0,this.maskWidth),-1,-1)},function(el,x){this.clipDiv(el,-1,x(0,this.maskWidth),x(0,this.maskHeight),-1)},function(el,x){this.clipDiv(el,x(this.maskHeight,0),-1,-1,x(this.maskWidth,0))}],clipDiv:function(el,y,w,h,x){this.flag=false;var params=[y,w,h,x];for(var i=params.length;i--;){params[i]=params[i]<0?'auto':params[i]+'px'};el.style.clip="rect("+params.join(" ")+")";if(y==0||x==0||w==this.maskWidth||h==this.maskHeight)this.flag=true},start:function(){var timer,nextTimer,k=0;var cur=self.arrImgs[self.pos%self.len].src;self.index=self.Type;self.Type||(self.index=Math.round(Math.random()*(self.Case.length-1)));var opt=self.Case[self.index];self.setMask(cur,opt[0],opt[1]);self.timer=self.timeLine(function(x){if(self.index<14){for(var i=self.actCount;i--;){self.fxs[opt[2]].call(self,self.masks[i],x)}}else{if(k<self.actCount){self.fxs[opt[2]].call(self,self.masks[k],x)};if(self.flag)k++}},function(){self._container.style.background='url('+cur+')';if(self.Auto){self.pos++;self.nextTimer=setTimeout(self.start,self.Pause)}});self.prevNum&&(self.prevNum.className='');self.prevNum=self.nums[self.pos%self.len];self.prevNum&&(self.prevNum.className='current')},createPagebar:function(){var num,pageBar;if(self.Navigate!="no"){pageBar=document.createElement("div");self.Navigate=="picture"?pageBar.className="pictureBar":pageBar.className="pageBar";if((self.PicturePosition=="bottom"||self.PicturePosition=="right")&&self.Navigate=="picture"&&self.NavigatePlace=="outer"){self._container.parentNode.appendChild(pageBar)}else if(self.PicturePosition=="left"&&self.Navigate=="picture"&&self.NavigatePlace=="outer"){self._container.parentNode.insertBefore(pageBar,self._container)}else{self._container.appendChild(pageBar)}};if(self.Navigate=="numberic"){for(var i=0;i<self.arrImgs.length;i++){num=document.createElement("A");num.href="javascript:void(0)";num.innerHTML=i+1;self.nums.push(pageBar.appendChild(num));num.numIndex=i;num.onclick=function(){self.pos=this.numIndex;clearTimeout(self.timer);clearTimeout(self.nextTimer);self.start()}}};if(self.Navigate=="picture"){for(var i=0;i<self.len;i++){num=document.createElement("img");num.src=self.arrImgs[i%self.len].src;if(self.PicturePosition=="bottom"&&self.NavigatePlace=="outer"){num.width=(self.Width-4*self.len)/self.len;num.height=self.Height/self.len}else if(self.PicturePosition=="bottom"&&self.NavigatePlace=="inner"){num.width=(self.Width/1.6-5*self.len)/self.len;num.height=self.Height/(1.6*self.len);pageBar.style.cssText="position:absolute;right:10;bottom:10"}else if(self.PicturePosition=="right"&&self.NavigatePlace=="inner"){num.width=(self.Width)/(2*self.len);num.height=(self.Height-2*self.len)/self.len;pageBar.style.cssText="position:absolute;right:0;width:"+(num.width+5);self._container.style.cssText="position:relative;left:0;"}else if(self.PicturePosition=="left"&&self.NavigatePlace=="inner"){num.width=(self.Width)/(2*self.len);num.height=(self.Height-2*self.len)/self.len;pageBar.style.cssText="position:absolute;left:0;width:"+(num.width+5);self._container.style.cssText="position:relative;left:0;"}else{num.width=(self.Width)/(2*self.len);num.height=(self.Height-2*self.len)/self.len;pageBar.style.cssText="float:left;width:"+(num.width+5);self._container.style.cssText="float:left"};pageBar.appendChild(num);self.nums.push(pageBar.appendChild(num));num.numIndex=i;num.onclick=function(){self.pos=this.numIndex;clearTimeout(self.timer);clearTimeout(self.nextTimer);self.start()}}};try{document.execCommand("BackgroundImageCache",false,true)}catch(e){}}}