page.php reload problem

excuse,
this is my blog website: http://blog.mukispace.com
and if click the page title , like profile http://blog.mukispace.com/profile/ , or guestbook http://blog.mukispace.com/guestbook/
you’ll see the web become blank, can’t reload full。

I don’t what’s wrong…
This is my page.php link, hope every body can help me , txh:)

http://www.mukispace.com/page.rar