简单的JS幻灯片

简单的JS幻灯片代码，收藏起来以后需要的时候随手拈来；

Js幻灯片：

<div class="huandeng">
        <script type="text/javascript">
            var widths=900;              
            var heights=348;              
            var counts=3;           
            img1=new Image ();img1.src='images/tu1.jpg';         
            img2=new Image ();img2.src='images/tu2.jpg';         
            img3=new Image ();img3.src='images/tu3.jpg'; 
            
            url1=new Image ();url1.src='#';        
            url2=new Image ();url2.src='#';        
            url3=new Image ();url3.src='#';
                    
            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 id="url"><img id="pic" style="border:0px;filter:progid:dximagetransform.microsoft.wipe(gradientsize=1.0,wipestyle=4, motion=forward)" width='+widths+' height='+heights+' /></a></div>');
            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+');" id="xxjdjj'+i+'" class="axx" target="_self">'+i+'</a>');}
            document.write('</div></div>');
            change_img();
        </script>
  </div>