JavaScript实现状态栏文字滚动效果

<HTML>
<HEAD>
<TITLE>间隔状态栏跑马灯</TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<SCRIPT language=JavaScript>
<!--
function scrollit(seed) {
var m1 = "HI：你 好! ";
var m2 = "欢迎访问本站网站";
var m3 = "请 多 提 意 见，谢 谢!";
var m4 = "E-MAIL:";
var m5 = "/";
var msg=m1+m2+m3+m4+m5;
var out = " ";
var c = 1;
if (seed > 100) {
seed--;
cmd="scrollit("+seed+")";
timerTwo=window.setTimeout(cmd,100);
}
else if (seed <= 100 && seed > 0) {
for (c=0 ; c < seed ; c++) {
out+=" ";
}
out+=msg;
seed--;
window.status=out;
cmd="scrollit("+seed+")";
timerTwo=window.setTimeout(cmd,100);
}
else if (seed <= 0) {
if (-seed < msg.length) {
out+=msg.substring(-seed,msg.length);
seed--;
window.status=out;
cmd="scrollit("+seed+")";
timerTwo=window.setTimeout(cmd,100);
}
else {
window.status=" ";
timerTwo=window.setTimeout("scrollit(100)",75);
}
}
}
//-->
</SCRIPT>
<META content="MSHTML 6.00.2900.2963" name=GENERATOR>
</HEAD>
<BODY bgColor=#fef4d9 onload=scrollit(100)>
</BODY>
</HTML>