在网页上双击滚动页面,单击停止

<SCRIPT language=JavaScript> var currentpos,timer;

function initialize() {     timer=setInterval("scrollwindow()",50); } function sc() {     clearInterval(timer); } function scrollwindow() {     currentpos=document.body.scrollTop;     window.scroll(0,++currentpos);     if (currentpos != document.body.scrollTop)     sc(); } document.οnmοusedοwn=sc document.οndblclick=initialize </SCRIPT>