Added attributes into <html> of userguide for valid html.
diff --git a/user_guide/database/active_record.html b/user_guide/database/active_record.html
index 4ba5bfd..bf43699 100644
--- a/user_guide/database/active_record.html
+++ b/user_guide/database/active_record.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 : Active Record</title>
diff --git a/user_guide/database/caching.html b/user_guide/database/caching.html
index 9e007f9..d286c92 100644
--- a/user_guide/database/caching.html
+++ b/user_guide/database/caching.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 : Database Caching Class</title>
diff --git a/user_guide/database/call_function.html b/user_guide/database/call_function.html
index 87ff2df..97661de 100644
--- a/user_guide/database/call_function.html
+++ b/user_guide/database/call_function.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 : Custom Function Calls</title>
diff --git a/user_guide/database/configuration.html b/user_guide/database/configuration.html
index b6126d9..c9ad2e3 100644
--- a/user_guide/database/configuration.html
+++ b/user_guide/database/configuration.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 : Database Configuration</title>
diff --git a/user_guide/database/connecting.html b/user_guide/database/connecting.html
index adf0c51..a86866d 100644
--- a/user_guide/database/connecting.html
+++ b/user_guide/database/connecting.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 : Connecting to your Database</title>
diff --git a/user_guide/database/examples.html b/user_guide/database/examples.html
index 434aa82..d8c01aa 100644
--- a/user_guide/database/examples.html
+++ b/user_guide/database/examples.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 : Database Quick Start</title>
diff --git a/user_guide/database/fields.html b/user_guide/database/fields.html
index de5e021..6da71c1 100644
--- a/user_guide/database/fields.html
+++ b/user_guide/database/fields.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 : Field Data</title>
diff --git a/user_guide/database/forge.html b/user_guide/database/forge.html
index 0a40454..7fc6589 100644
--- a/user_guide/database/forge.html
+++ b/user_guide/database/forge.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 : Database Utility Class</title>
diff --git a/user_guide/database/helpers.html b/user_guide/database/helpers.html
index 6567c02..edf7fae 100644
--- a/user_guide/database/helpers.html
+++ b/user_guide/database/helpers.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 : Query Helper Functions</title>
diff --git a/user_guide/database/index.html b/user_guide/database/index.html
index 6ad90e9..76c32e2 100644
--- a/user_guide/database/index.html
+++ b/user_guide/database/index.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 : The Database Class</title>
diff --git a/user_guide/database/queries.html b/user_guide/database/queries.html
index 21b550a..687076f 100644
--- a/user_guide/database/queries.html
+++ b/user_guide/database/queries.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 : Queries</title>
diff --git a/user_guide/database/results.html b/user_guide/database/results.html
index 6c6142c..6a7bf04 100644
--- a/user_guide/database/results.html
+++ b/user_guide/database/results.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 : Generating Query Results</title>
diff --git a/user_guide/database/table_data.html b/user_guide/database/table_data.html
index c5d2aaa..9f1c974 100644
--- a/user_guide/database/table_data.html
+++ b/user_guide/database/table_data.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 : Table Data</title>
diff --git a/user_guide/database/transactions.html b/user_guide/database/transactions.html
index 19f091e..1c2d9b1 100644
--- a/user_guide/database/transactions.html
+++ b/user_guide/database/transactions.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 : Transactions</title>
diff --git a/user_guide/database/utilities.html b/user_guide/database/utilities.html
index 56a728b..b6cdb8a 100644
--- a/user_guide/database/utilities.html
+++ b/user_guide/database/utilities.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 : Database Utility Class</title>