anchor function is getting redirected to home page always irrespective of url

[eluser]Unknown[/eluser]
hello,
i have used anchor function in my header.php file to set url's for tabs.
Default controller is set in routes.php file as
$route['default_controller'] = "web/master";

the code used for anchor function is like
<?php echo anchor('blog', 'BLOG'); ?>

The extension added is .html which is set in config.php as
$config['url_suffix'] = ".html";

On clicking on tab the address bar shows the url as http://localhost:83/myapplication/blog.html but the page it shows is http://localhost:83/myapplication/index.php

So i am unsure about what is going wrong with it.
Can anybody please help me out with this?
Thanks in advance...