又一个小巧的图片预加载类_图象特效

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<script> <BR><!-- <BR>var IE=navigator.appName=="Microsoft Internet Explorer"; <BR>var Opera=navigator.appName.toLowerCase()=="opera"; <BR>var FF=!IE && !Opera; <BR>function LoadImage(arrSrc,callBack) <BR>{ <BR> this.Length=arrSrc.length; <BR> this.LoadedLen=0; //已经被加载的图片个数 <BR> var self=this; <BR> if(self.Length<1) <BR> { <BR> callBack(arrSrc); <BR> return; <BR> } <br><br> //经测试,OPERA与别的浏览器加载方式不同,所以特别独立开来... <BR> if(Opera) <BR> { <BR> for(var i=0;i<self.Length;i++) <BR> { <BR> var tmpImg=new Image(); <BR> tmpImg.src=arrSrc[i]; <BR> tmpImg.onload=function() <BR> { <BR> self.LoadedLen++; <BR> if(self.LoadedLen==self.Length && callBack) callBack(arrSrc); <BR> } <BR> } <BR> return; <BR> } <br><br> this.Load=function() <BR> { <BR> self.LoadedLen++; <BR> document.getElementById("counter").innerHTML=self.LoadedLen; <BR> if(self.LoadedLen<self.Length) self.DownImg(); <BR> else if(callBack) callBack(arrSrc); <BR> } <br><br> this.DownImg=function() <BR> { <BR> var tmpImg=new Image(); <BR> tmpImg.src=arrSrc[self.LoadedLen]; <BR> if(IE) <BR> { <BR> if(tmpImg.readyState=="complete") self.Load(); <BR> else tmpImg.onreadystatechange=function() <BR> { <BR> if(this.readyState=="complete") self.Load(); <BR> } <BR> } <BR> else tmpImg.onload=self.Load; <BR> } <BR> this.DownImg(); <BR>} <BR>//--> <BR></script>



 <script> <BR> <!-- <BR> var arr=['http://photo.hjbbs.com/photo/20060531/20060531103027226_756_o.jpg','http://img1.soufun.com/bbs/2007_02/13/1171345302199.jpeg','http://img.c8c8.cn/2006/09/09/15032/pp20060909002749.jpg']; <BR> var t=new LoadImage(arr,function(arr) <BR> { <br><br> var str=""; <BR> for(var i=0;i<arr.length;i++) <BR> { <BR> str+="<img src='"+arr[i]+"' / alt="又一个小巧的图片预加载类_图象特效" ><br>"; <BR> } <BR> document.body.innerHTML+=str; <BR> }); <BR> //--> <BR> </script>