代码如下：
<SCRIPT language=JavaScript> <!-- Begin var speed = 20; var cycledelay = 1000; var maxsize = 48; var x = 0; var y = 0; var themessage, size; var esize = ""; function initArray() { this.length = initArray.arguments.length; for (var i = 0; i < this.length; i++) { this[i] = initArray.arguments[i]; } } var themessage2 = new initArray( "猎取网上精华", "免费资源基地", "网站：www.liequ.net", "请多多留意最新版" ); if(navigator.appName == "Netscape") document.write('<layer id="wds"></layer><br>'); if (navigator.appVersion.indexOf("MSIE") != -1) document.write('<span id="wds"></span><br>'); function upwords(){ themessage = themessage2[y]; if (x < maxsize) { x++; setTimeout("upwords()",speed); } else setTimeout("downwords()",cycledelay); if(navigator.appName == "Netscape") { size = "<font point-size='"+x+"pt'>"; document.wds.document.write(size+"<center>"+themessage+"</center>"+esize); document.wds.document.close(); } if (navigator.appVersion.indexOf("MSIE") != -1){ wds.innerHTML = "<center>"+themessage+"</center>"; wds.style.fontSize=x+'px' } } function downwords(){ if (x > 1) { x--; setTimeout("downwords()",speed); } else { setTimeout("upwords()",cycledelay); y++; if (y > themessage2.length - 1) y = 0; } if(navigator.appName == "Netscape") { size = "<font point-size='"+x+"pt'>"; document.wds.document.write(size+"<center>"+themessage+"</center>"+esize); document.wds.document.close(); } if (navigator.appVersion.indexOf("MSIE") != -1){ wds.innerHTML = "<center>"+themessage+"</center>"; wds.style.fontSize=x+'px' } } setTimeout("upwords()",speed); // End --> </script>