Fixed a bug in link_tag() of the URL helper where a key was passed instead of a value.
diff --git a/system/helpers/html_helper.php b/system/helpers/html_helper.php
index 4684d8e..3e15b44 100644
--- a/system/helpers/html_helper.php
+++ b/system/helpers/html_helper.php
@@ -257,7 +257,7 @@
 		{

 			foreach ($href as $k=>$v)

 			{

-				if ($k == 'href' AND strpos($k, '://') === FALSE)

+				if ($k == 'href' AND strpos($v, '://') === FALSE)

 				{

 					if ($index_page === TRUE)

 					{