文字来回上下移动或跳动的代码

<!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> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>文字来回上下移动或跳动</title> </head> <body> <script language="JavaScript"> <!-- done = 0; step = 4 function anim(yp,yk) { if(document.layers) document.layers["napis"].top=yp; else document.all["napis"].style.top=yp; if(yp>yk) step = -4 if(yp<60) step = 4 setTimeout('anim('+(yp+step)+','+yk+')', 10); } function start() { if(done) return done = 1; if(navigator.appName=="Netscape") { document.napis.left=innerWidth/2 - 145; anim(60,innerHeight - 60) } else { napis.style.left=280; anim(60,document.body.offsetHeight - 60) } } //--> </script> <font size="5"><b>脚本之家欢迎您的到来！</b></font> <script language="JavaScript"> <!-- setTimeout('start()',10); //--> </script> </body> </html>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]