<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>这是一个动态JavaScript文字显示的例子</title>
<script type="text/JavaScript">
var POSITION = 50;
var DELAY = 150;
var MESSAGE = "这是一个动态JavaScript文字显示的例子";
function bannerObject(){
this.msg = MESSAGE;
this.out = " ";
this.pos = POSITION;
this.delay = DELAY;
this.i = 0;
this.reset = clearMessage;
}
function clearMessage(){
this.pos = POSITION;
}
var scroll = new bannerObject();
function scroller(){
scroll.out += " ";
if(scroll.pos>0)
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);
document.noticeForm.notice.value = scroll.out;
scroll.out = " ";
scroll.pos--;
scroll.pos--;
if (scroll.pos < -(scroll.msg.length)) {
scroll.reset();
}
window.setTimeout("scroller()", scroll.delay);
}
</script>
</head>
<body onload="scroller()" bgcolor="#000000" link="#C0C0C0" vlink="#C0C0C0" alink="#008080" text="#C0C0C0">
<table border="0" cellspacing="0" cellpadding="0">
<tr><td width="100%">
<form name="noticeForm" action="">
<p><input type="text" name="notice" size="50" style="background-color: rgb(192,192,192)"/></p>
</form>
</td></tr>
</table>
</body>
</html>
