added global cookie prefix to get_cookie() unless the cookie exists as-requested
diff --git a/system/helpers/cookie_helper.php b/system/helpers/cookie_helper.php
index d906882..77f86e4 100644
--- a/system/helpers/cookie_helper.php
+++ b/system/helpers/cookie_helper.php
@@ -107,8 +107,14 @@
 {
 	function get_cookie($index = '', $xss_clean = FALSE)
 	{
-		$CI =& get_instance();
-		return $CI->input->cookie($index, $xss_clean);
+		$prefix = '';
+		
+		if ( ! isset($_COOKIE[$index]) && config_item('cookie_prefix') != '')
+		{
+			$prefix = config_item('cookie_prefix');
+		}
+		
+		return $CI->input->cookie($prefix.$index, $xss_clean);
 	}
 }
 
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 5f76c00..65950cd 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -87,6 +87,7 @@
 			<li>Added ability to force lowercase for <kbd>url_title()</kbd> in the <a href="helpers/url_helper.html">URL helper</a>.</li>
 			<li>Changed the default "type" of <kbd>form_button()</kbd> to "button" from "submit" in the <a href="helpers/form_helper.html">form helper</a>.</li>
 			<li>Changed redirect() in the URL helper to allow redirections to URLs outside of the CI site.</li>
+			<li>Updated get_cookie() to try to fetch the cookie using the global cookie prefix if the requested cookie name doesn't exist.</li>
 		</ul>
 	</li>
 	<li>Other Changes