Added attributes into <html> of userguide for valid html.
diff --git a/user_guide/libraries/benchmark.html b/user_guide/libraries/benchmark.html
index 1a91abf..9fcd645 100644
--- a/user_guide/libraries/benchmark.html
+++ b/user_guide/libraries/benchmark.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Benchmarking Class</title>
diff --git a/user_guide/libraries/calendar.html b/user_guide/libraries/calendar.html
index 5e4e30c..2e75a7e 100644
--- a/user_guide/libraries/calendar.html
+++ b/user_guide/libraries/calendar.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Calendaring Class</title>
diff --git a/user_guide/libraries/config.html b/user_guide/libraries/config.html
index bf653fe..93b0857 100644
--- a/user_guide/libraries/config.html
+++ b/user_guide/libraries/config.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Config Class</title>
diff --git a/user_guide/libraries/email.html b/user_guide/libraries/email.html
index 01085d5..6da687b 100644
--- a/user_guide/libraries/email.html
+++ b/user_guide/libraries/email.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Email Class</title>
diff --git a/user_guide/libraries/encryption.html b/user_guide/libraries/encryption.html
index c4499a8..1890c2e 100644
--- a/user_guide/libraries/encryption.html
+++ b/user_guide/libraries/encryption.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Encryption Class</title>
diff --git a/user_guide/libraries/file_uploading.html b/user_guide/libraries/file_uploading.html
index 46f6120..64a9303 100644
--- a/user_guide/libraries/file_uploading.html
+++ b/user_guide/libraries/file_uploading.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : File Uploading Class</title>
diff --git a/user_guide/libraries/ftp.html b/user_guide/libraries/ftp.html
index 87309f8..8f3c10a 100644
--- a/user_guide/libraries/ftp.html
+++ b/user_guide/libraries/ftp.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : FTP Class</title>
diff --git a/user_guide/libraries/image_lib.html b/user_guide/libraries/image_lib.html
index 1cca5bc..9cb31a5 100644
--- a/user_guide/libraries/image_lib.html
+++ b/user_guide/libraries/image_lib.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Image Manipulation Class</title>
diff --git a/user_guide/libraries/input.html b/user_guide/libraries/input.html
index e1c5fcb..0cd81e3 100644
--- a/user_guide/libraries/input.html
+++ b/user_guide/libraries/input.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Input Class</title>
diff --git a/user_guide/libraries/language.html b/user_guide/libraries/language.html
index 38fd4ae..72fec89 100644
--- a/user_guide/libraries/language.html
+++ b/user_guide/libraries/language.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Language Class</title>
diff --git a/user_guide/libraries/loader.html b/user_guide/libraries/loader.html
index 56ccc21..ad120f5 100644
--- a/user_guide/libraries/loader.html
+++ b/user_guide/libraries/loader.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Loader Class</title>
diff --git a/user_guide/libraries/output.html b/user_guide/libraries/output.html
index 827cc8b..1905f32 100644
--- a/user_guide/libraries/output.html
+++ b/user_guide/libraries/output.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Output Class</title>
diff --git a/user_guide/libraries/pagination.html b/user_guide/libraries/pagination.html
index f8389f9..e8696f6 100644
--- a/user_guide/libraries/pagination.html
+++ b/user_guide/libraries/pagination.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Pagination Class</title>
diff --git a/user_guide/libraries/parser.html b/user_guide/libraries/parser.html
index 8bf4afd..0809ea1 100644
--- a/user_guide/libraries/parser.html
+++ b/user_guide/libraries/parser.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Template Parser Class</title>
diff --git a/user_guide/libraries/sessions.html b/user_guide/libraries/sessions.html
index 86d6e16..7d6c693 100644
--- a/user_guide/libraries/sessions.html
+++ b/user_guide/libraries/sessions.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide</title>
diff --git a/user_guide/libraries/table.html b/user_guide/libraries/table.html
index 59930d4..0c15a07 100644
--- a/user_guide/libraries/table.html
+++ b/user_guide/libraries/table.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : HTML Table Class</title>
diff --git a/user_guide/libraries/trackback.html b/user_guide/libraries/trackback.html
index d816fab..b095606 100644
--- a/user_guide/libraries/trackback.html
+++ b/user_guide/libraries/trackback.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Trackback Class</title>
diff --git a/user_guide/libraries/unit_testing.html b/user_guide/libraries/unit_testing.html
index 0143c9c..70567fc 100644
--- a/user_guide/libraries/unit_testing.html
+++ b/user_guide/libraries/unit_testing.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Unit Testing Class</title>
diff --git a/user_guide/libraries/uri.html b/user_guide/libraries/uri.html
index 180e56c..6c424cb 100644
--- a/user_guide/libraries/uri.html
+++ b/user_guide/libraries/uri.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : URI Class</title>
diff --git a/user_guide/libraries/user_agent.html b/user_guide/libraries/user_agent.html
index 1d11fbd..59304f6 100644
--- a/user_guide/libraries/user_agent.html
+++ b/user_guide/libraries/user_agent.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : User Agent Class</title>
diff --git a/user_guide/libraries/validation.html b/user_guide/libraries/validation.html
index 377503b..af5631c 100644
--- a/user_guide/libraries/validation.html
+++ b/user_guide/libraries/validation.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Form Validation</title>
diff --git a/user_guide/libraries/xmlrpc.html b/user_guide/libraries/xmlrpc.html
index a44f8bd..49678a6 100644
--- a/user_guide/libraries/xmlrpc.html
+++ b/user_guide/libraries/xmlrpc.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : XML-RPC and XML-RPC Server Classes</title>
diff --git a/user_guide/libraries/zip.html b/user_guide/libraries/zip.html
index 23e7587..8361c92 100644
--- a/user_guide/libraries/zip.html
+++ b/user_guide/libraries/zip.html
@@ -1,5 +1,5 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>CodeIgniter User Guide : Zip Encoding Class</title>