安装： 拷贝以下脚本贴在网页紧接<body>之下。 <script language="JavaScript1.2"> //change 1 to another integer to alter the scroll speed. Greater is faster var speed=2 var currentpos=0,alt=1,curpos1=0,curpos2=-1 function initialize(){ startit() } function scrollwindow(){ if (document.all) temp=document.body.scrollTop else temp=window.pageYOffset if (alt==0) alt=1 else alt=0 if (alt==0) curpos1=temp else curpos2=temp if (curpos1!=curpos2){ if (document.all) currentpos=document.body.scrollTop+speed else currentpos=window.pageYOffset+speed window.scroll(0,currentpos) } else{ currentpos=0 window.scroll(0,currentpos) } } function startit(){ setInterval("scrollwindow()",10) } window.onload=initialize </script>