实现Title动态效果JS脚本

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>网页吧</title>
<script language="JavaScript">
step=0function
flash_title()
{step++if (step==3) {step=1}if (step==1) {document.title='http://web8.bokee.com'}
if (step==2)
{document.title='☆★☆网页吧☆★☆'}
setTimeout("flash_title()",1000);}
flash_title()
</script>
</head>
<body>
</body>
</html>