<SCRIPT LANGUAGE="JavaScript">;  
function password() {  
var testV = 1;  
var pass1 = prompt('请输入VIP权限密匙','');  
while (testV < 3) {  
if (!pass1)  
history.go(-1);  
if (pass1 == "123456") {  
break;  
} 
else 
{ 
  location.href="密码错误后跳转地址"; 
  break; 
}  
testV+=1;  
var pass1 =  
prompt('Password mistake! 你无权查看内容，赶快离开！或重新输入:');  
}  
if (pass1!="22" & testV ==3)  
history.go(-1);  
return " ";  
}  
document.write(password());  
</SCRIPT>