Removing Unwanted CSS I have removed default css files using a code below, but still it is showing some unwanted css files 

&lt;?php
function _phptemplate_variables($hook, $vars)
{
 $css = drupal_add_css();
 unset($css['all']['module']['modules/system/system.css']);
 unset($css['all']['module']['modules/system/defaults.css']);
 $vars['styles'] = drupal_get_css($css);
 return $vars;
}
?&gt;


In firebug GOw.css is appearing I dont know from where, can anybody please tell me how can I resolve this?
To find where a specific stylesheet is coming from, scan your Drupal directory for that file's name. This is the easiest way to find it.

To disable a stylesheet, you can either use preprocess hook, or add the following to your theme's .info file:

stylesheets[all][] = css/removed/GOw.css


Just make sure that the file does not exist, and Drupal won't include it.

Hope this helps.