网页状态栏的代码是什么呢？

代码：

<script language=JavaScript>
var MESSAGE="欢迎光临随想博客http://blog.sina.com.cn/u/1230755802"
var POSITION=100
var DELAY=5
var scroll=new statusMessageObject()
function statusMessageObject(p,d){
this.msg =MESSAGE
this.out =" "
this.pos =POSITION
this.delay=DELAY
this.i=0
this.reset=clearMessage}
function clearMessage(){
this.pos=POSITION}
function scroller(){
for (scroll.i=0;scroll.i<scroll.pos;scroll.i++){
scroll.out += " "}
if (scroll.pos >= 0)
scroll.out += scroll.msg
else scroll.out=scroll.msg.substring(-scroll.pos,scroll.msg.length)
window.status=scroll.out
scroll.out=" "
scroll.pos--
if (scroll.pos < -(scroll.msg.length)) {
scroll.reset()}
setTimeout('scroller()',scroll.delay)}
function sn