-------------------------------------------------------------------------------- 脚本说明： 把如下代码加入区域中: <script LANGUAGE="JavaScript"> function password() { var testV = 1; var pass1 = prompt('请输入密码(密码是welcome):',''); while (testV < 3) { if (!pass1) history.go(-1); if (pass1 == "welcome") { alert('密码正确!'); break; } testV+=1; var pass1 = prompt('密码错误!请重新输入:'); } if (pass1!="password" & testV ==3) history.go(-1); return " "; } document.write(password()); </script> --------------------------------------------------------------------------------