redirect on other domain when you load your page

Recently i am working with the google map and its working fine but after some days its not load the google map and redirect me on the other domain. if you facing the same problem then i have a solution for this. if there is any form which is in your site where user can insert the data like comments form or review form, if user insert the comment and its direct approval then its make this issue. below is one line code which you need to find in you entire web-page.

 
<META http-equiv="refresh" content="0;URL=http://www.google.com">

Here, URL is the the domain on which you are redirected. if you found any code like this then remove it and your problem resolved.