diff --git a/common.inc.php b/common.inc.php
index bca7b6c..508eee8 100644
--- a/common.inc.php
+++ b/common.inc.php
@@ -4,11 +4,13 @@ require("config.inc.php");
 function send_header($title="")
 {
 ?>
-<HTML>
-<HEAD><TITLE><?=$title?></TITLE></HEAD>
-<BODY>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head><title><?=$title?></title>
+</head>
+<body>
 <h1>Science Fair In A Box</h1>
-<hr>
+<hr />
 
 <?
 }
@@ -16,8 +18,8 @@ function send_header($title="")
 function send_footer()
 {
 ?>
-</BODY>
-</HTML>
+</body>
+</html>
 
 <?
 }
