Page Jump Code implemented by meta

Hello, I'm glad to meet you. On the Internet, I downloaded the code of the classified information network and uploaded it to the space. However, the default homepage name required by the space is index.htm, but the homepage name of the provided code is pop_ad, the web page cannot be opened.
My suggestions are as follows:
Hi!
You can use the jump code to direct the home page to pop_ad
View my 404 page
Http://www.jb51.net/404
You only need to add a line of code to the page
<Meta http-equiv = "Refresh" content = "5; url = http://www.jb51.net"/>
Content = 5 this is the time in seconds. You can set it to 0 directly.
Try it.

First:Copy codeThe Code is as follows: <script language = "javascript" type = "text/javascript">
Window. location. href = "login. jsp? Backurl = "+ window. location. href;
</Script>

Second:Copy codeThe Code is as follows: <script language = "javascript">
Alert ("return ");
Window. history. back (-1 );
</Script>

Third:Copy codeThe Code is as follows: <script language = "javascript">
Window. navigate ("top. jsp ");
</Script>

Fourth:Copy codeThe Code is as follows: <script language = "JavaScript">
Self.location+'top.htm ';
</Script>

Category 5:Copy codeThe Code is as follows: <script language = "javascript">
Alert ("illegal access! ");
Top. location = 'xx. jsp ';
</Script>

================= With Countdown ====================================
One tested:<Input type = "text" readonly value = "10" id = "time">