Live site paths are not working but its working on dev site

[eluser]fiktionvt[/eluser]
I did change the base_url() so my base_url in my config looks like this

Code:

$root = "http://".$_SERVER['HTTP_HOST'];
$root .= str_replace(basename($_SERVER['SCRIPT_NAME']),"",$_SERVER['SCRIPT_NAME']);

$config['base_url']    = $root;

I have not changed my index.php file it still points to the 'application' folder and I did not change the name of that folder so that should be working.

In my view the link to the contact page looks like this

Code:

<li id="nav_contact"><a href="&lt;?php echo site_url('site/contact')?&gt;"><span>Contact</span></a></li>

so site is my controller name with the function contact()

When I echo out site_url() on my localhost site it comes up as this: http://localhost:81/ci/index.php

When I echo out site_url() on my live site it cmes up as this http://livesite.com/index.php

I dunno whats wrong everything is working on my dev box. Please any help would be greatly appreciated.