双击让屏幕滚动代码

<script language="JavaScript" type="text/JavaScript">

//双击鼠标滚动屏幕的代码

var currentpos,timer;

function initialize()

{

timer=setInterval ("scrollwindow ()",30);

}

function sc()

{

clearInterval(timer);

}

function scrollwindow()

{

currentpos=document.body.scrollTop;

window.scroll(0,++currentpos);

if (currentpos !=document.body.scrollTop)

sc();

}

document.onmousedown=sc

document.ondblclick=initialize

</script>