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Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.611.2.1
diff -u -r1.611.2.1 common.inc
--- includes/common.inc	14 Feb 2007 04:15:24 -0000	1.611.2.1
+++ includes/common.inc	7 Mar 2007 02:31:26 -0000
@@ -1416,10 +1416,12 @@
  *
  *   Typical candidates for caching are for example styles for nodes across
  *   the site, or used in the theme.
+ * @param $remove
+ *   (optional) Should this CSS file be removed from the stylesheet queue?
  * @return
  *   An array of CSS files.
  */
-function drupal_add_css($path = NULL, $type = 'module', $media = 'all', $preprocess = TRUE) {
+function drupal_add_css($path = NULL, $type = 'module', $media = 'all', $preprocess = TRUE, $remove = NULL) {
   static $css = array();
 
   // Create an array of CSS files for each media type first, since each type needs to be served
@@ -1429,13 +1431,32 @@
     if (!isset($css[$media])) {
       $css[$media] = array('module' => array(), 'theme' => array());
     }
-    $css[$media][$type][$path] = $preprocess;
+    if (!isset($remove)) {
+      $css[$media][$type][$path] = $preprocess;
+    }
+    else if (isset($css[$media][$type][$path])) {
+      unset($css[$media][$type][$path]);
+    }
   }
 
   return $css;
 }
 
 /**
+ * Removes a CSS file from the stylesheet queue.
+ *
+ * @param $path
+ *   (optional) The path to the CSS file relative to the base_path(), e.g.,
+ *   /modules/devel/devel.css.
+ * @return
+ *   An array of CSS files.
+ */
+function drupal_remove_css($path = NULL) {
+  $css = drupal_add_css($path, 'module', 'all', TRUE, TRUE);
+  return $css;
+}
+
+/**
  * Returns a themed representation of all stylesheets that should be attached to the page.
  * It loads the CSS in order, with 'core' CSS first, then 'module' CSS, then 'theme' CSS files.
  * This ensures proper cascading of styles for easy overriding in modules and themes.