图片切换特效(js)

效果：

<script>   
var widths=282;                 
var heights=164;                 
var counts=6;      
img1=new Image ();img1.src='UploadFile/jscode/2007729214812897.jpg';    
img2=new Image ();img2.src='UploadFile/jscode/2007729214813293.jpg';    
img3=new Image ();img3.src='UploadFile/jscode/2007729214814549.jpg';    
img4=new Image ();img4.src='UploadFile/jscode/2007729214814651.jpg';     
img5=new Image ();img5.src='UploadFile/jscode/2007729214815914.jpg';    
img6=new Image ();img6.src='UploadFile/jscode/2007729214816449.jpg';    
url1=new Image ();url1.src='http://www.memoon.cn';   
url2=new Image ();url2.src='http://www.memoon.cn';   
url3=new Image ();url3.src='http://www.memoon.cn';   
url4=new Image ();url4.src='http://www.memoon.cn';   
url5=new Image ();url5.src='http://www.memoon.cn';   
url6=new Image ();url6.src='http://www.memoon.cn';   
//天极伊永恒原创   
var nn=1;   
var key=0;   
function change_img()   
{if(key==0){key=1;}   
else if(document.all)   
{document.getElementById("pic").filters[0].Apply();document.getElementById("pic").filters[0].Play(duration=2);}   
eval('document.getElementById("pic").src=img'+nn+'.src');   
eval('document.getElementById("url").href=url'+nn+'.src');   
for (var i=1;i<=counts;i++){document.getElementById("xxjdjj"+i).className='axx';}   
document.getElementById("xxjdjj"+nn).className='bxx';   
nn++;if(nn>counts){nn=1;}   
tt=setTimeout('change_img()',4000);}   
function changeimg(n){nn=n;window.clearInterval(tt);change_img();}   
document.write('<style>');   
document.write('.axx{padding:1px 7px;border-left:#cccccc 1px solid;}');   
document.write('a.axx:link,a.axx:visited{text-decoration:none;color:#fff;line-height:12px;font:9px sans-serif;background-color:#666;}');   
document.write('a.axx:active,a.axx:hover{text-decoration:none;color:#fff;line-height:12px;font:9px sans-serif;background-color:#999;}');   
document.write('.bxx{padding:1px 7px;border-left:#cccccc 1px solid;}');   
document.write('a.bxx:link,a.bxx:visited{text-decoration:none;color:#fff;line-height:12px;font:9px sans-serif;background-color:#D34600;}');   
document.write('a.bxx:active,a.bxx:hover{text-decoration:none;color:#fff;line-height:12px;font:9px sans-serif;background-color:#D34600;}');   
document.write('</style>');   
document.write('<div style="width:'+widths+'px;height:'+heights+'px;overflow:hidden;text-overflow:clip;">');   
document.write('<div><a >);   
document.write('<div style="filter:alpha(style=1,opacity=10,finishOpacity=80);background: #888888;width:100%-2px;text-align:right;top:-12px;position:relative;margin:1px;height:12px;padding:0px;margin:0px;border:0px;">');   
for(var i=1;i<counts+1;i++){document.write('<a href="javascript:changeimg('+i+');" >);}   
document.write('</div></div>');   
change_img();   
</script>