Fixed typos
diff --git a/system/libraries/Encrypt.php b/system/libraries/Encrypt.php
index 5faf1f2..a46d4f4 100644
--- a/system/libraries/Encrypt.php
+++ b/system/libraries/Encrypt.php
@@ -65,7 +65,7 @@
 	protected $_hash_type		= 'sha1';
 
 	/**
-	 * Flag for the existance of mcrypt
+	 * Flag for the existence of mcrypt
 	 *
 	 * @var bool
 	 */
diff --git a/system/libraries/Ftp.php b/system/libraries/Ftp.php
index b532075..2d345c2 100644
--- a/system/libraries/Ftp.php
+++ b/system/libraries/Ftp.php
@@ -466,7 +466,7 @@
 
 	/**
 	 * Delete a folder and recursively delete everything (including sub-folders)
-	 * containted within it.
+	 * contained within it.
 	 *
 	 * @param	string	$filepath
 	 * @return	bool
diff --git a/system/libraries/Javascript/Jquery.php b/system/libraries/Javascript/Jquery.php
index 25accee..11f2d23 100644
--- a/system/libraries/Javascript/Jquery.php
+++ b/system/libraries/Javascript/Jquery.php
@@ -84,7 +84,7 @@
 	public $jquery_table_sorter_active = FALSE;
 
 	/**
-	 * JQuery table sorder pager active
+	 * JQuery table sorter pager active
 	 *
 	 * @var	bool
 	 */
diff --git a/system/libraries/Session/Session.php b/system/libraries/Session/Session.php
index 0549fef..05a470d 100644
--- a/system/libraries/Session/Session.php
+++ b/system/libraries/Session/Session.php
@@ -795,7 +795,7 @@
 	/**
 	 * Set flashdata
 	 *
-	 * Legacy CI_Session compatibiliy method
+	 * Legacy CI_Session compatibility method
 	 *
 	 * @param	mixed	$data	Session data key or an associative array
 	 * @param	mixed	$value	Value to store