我定义了一个滚屏的函数，为什么不走阿

<script language='JavaScript'>
<!--
//confirm("大家好，我来了");//刷新按钮
//history.go(-1);
var autoScrollOn = 1;
var scrollOnFunction;
var scrollOffFunction;

function scrollWindow(){
if ( autoScrollOn == 1 ){
//this.scroll(0,65000);
this.scroll(65000,0);
setTimeout('scrollWindow()', 100);
}}

function scrollOn(){
autoScrollOn = 1;
scrollWindow();}

function scrollOff(){
autoScrollOn = 0;}

function StartUp(){
this.onblur = scrollOnFunction;
this.onfocus = scrollOffFunction;
scrollWindow();}

scrollOnFunction = new Function('scrollOn()')
scrollOffFunction = new Function('scrollOff()')
StartUp();
// -->
</script>
为什么右边的框不往下滑动阿