diff --git a/booklets.php b/booklets.php
index 8586509..944d2c6 100644
--- a/booklets.php
+++ b/booklets.php
@@ -5,7 +5,7 @@ $title = 'Booklets';
 include('include/header.php');
 echo "<h2>$title</h2>\n";
 
-$sql1 = 'SELECT * FROM '.$db['booklets'].' ORDER BY filename';
+$sql1 = 'SELECT * FROM '.db('booklets').' ORDER BY filename';
 
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 echo "<ul class=\"incipit\">\n";
diff --git a/changes.php b/changes.php
index a6cd86b..9d0e5bb 100644
--- a/changes.php
+++ b/changes.php
@@ -6,15 +6,15 @@ $title = 'Changesets';
 include('include/header.php');
 echo "<h2>$title</h2>\n";
 
-$sql1 = 'SELECT * FROM '.$db['changesets'].' WHERE time > 1357000000 ORDER BY time DESC';
+$sql1 = 'SELECT * FROM '.db('changesets').' WHERE time > 1357000000 ORDER BY time DESC';
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 while($m = $req1->fetch_assoc()) {
 	echo "<h4>".date("M d, Y",$m['time'])." (".username_from_id($m['user_id']).")</h4>\n";
 	echo "<p>".$m['comment']."</p>\n";
-	$sql3 = 'SELECT * FROM '.$db['chants'].' WHERE id = '.$m['chant_id'];
+	$sql3 = 'SELECT * FROM '.db('chants').' WHERE id = '.$m['chant_id'];
 	$req3 = $mysqli->query($sql3) or die('Erreur SQL !<br />'.$sql3.'<br />'.$mysqli->error);
 	$c = $req3->fetch_assoc();
-	$sql2 = 'SELECT * FROM '.$db['changes'].' WHERE changeset = "'.$m['user_id'].'|'.$m['chant_id'].'|'.$m['time'].'" ORDER BY field';
+	$sql2 = 'SELECT * FROM '.db('changes').' WHERE changeset = "'.$m['user_id'].'|'.$m['chant_id'].'|'.$m['time'].'" ORDER BY field';
 	$req2 = $mysqli->query($sql2) or die('Erreur SQL !<br />'.$sql2.'<br />'.$mysqli->error);
 	while($f = $req2->fetch_assoc()) {
 		echo '<p><i>'.$f['field']."</i><br />\n";
diff --git a/chant.php b/chant.php
index 8a7c9f7..20ff0d3 100644
--- a/chant.php
+++ b/chant.php
@@ -8,7 +8,7 @@ if(array_key_exists("id", $_GET)) {
 } else {
 	die('No id');
 }
-$sql1 = 'SELECT * FROM '.$db['chants'].' WHERE id = '.$id;
+$sql1 = 'SELECT * FROM '.db('chants').' WHERE id = '.$id;
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 $c = $req1->fetch_assoc();
 if(!$c) {
@@ -19,11 +19,11 @@ $title = $c['incipit'];
 include('include/header.php');
 
 if(isset($_POST['proofread']) && $_POST['proofread'] == 'Me' && $c) {
-	$mysqli->query('INSERT into '.$db['proofreading'].' VALUES ('.$id.','.$current_user->ID.','.time().')') or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
+	$mysqli->query('INSERT into '.db('proofreading').' VALUES ('.$id.','.$current_user->ID.','.time().')') or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 }
 
 $c_p = array();
-$sql1 = 'SELECT * FROM '.$db['chant_sources'].' WHERE chant_id = '.$id.' ORDER BY source';
+$sql1 = 'SELECT * FROM '.db('chant_sources').' WHERE chant_id = '.$id.' ORDER BY source';
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 while ($s = $req1->fetch_assoc()) {
 	$c_s = array($s['source'], $s['page']);
@@ -80,7 +80,7 @@ if(count($c_p) > 0) {
 	echo "</ul>\n";
 }
 
-$sql1 = 'SELECT * FROM '.$db['proofreading'].' WHERE chant_id = '.$c['id'].' ORDER BY time DESC';
+$sql1 = 'SELECT * FROM '.db('proofreading').' WHERE chant_id = '.$c['id'].' ORDER BY time DESC';
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 $proof = array();
 $proof_done = False;
@@ -117,19 +117,18 @@ if(is_string($content)) {
 	}
 	echo "</ul></li>\n";
 }
-echo '<li><a href="download.php?id='.$c['id'].'&amp;format=pdf">PDF</a></li>'."\n";
-echo '<li><a href="download.php?id='.$c['id'].'&amp;format=eps">EPS</a></li>'."\n";
-echo '<li><a href="download.php?id='.$c['id'].'&amp;format=png">PNG</a></li>'."\n";
+foreach(array('pdf','eps','png') as $a) {
+	echo '<li><a href="download.php?id='.$c['id'].'&amp;format='.$a.'">'.strtoupper($a).'</a></li>'."\n";
+}
 echo "</ul>\n";
 if($c['gabc_verses'] || $c['tex_verses']){
 	echo "<ul>\n";
-	echo '<li><a href="download.php?id='.$c['id'].'&amp;format=gabc&amp;1verse=1">GABC (1st verse)</a></li>'."\n";
-	echo '<li><a href="download.php?id='.$c['id'].'&amp;format=pdf&amp;1verse=1">PDF (1st verse)</a></li>'."\n";
-	echo '<li><a href="download.php?id='.$c['id'].'&amp;format=eps&amp;1verse=1">EPS (1st verse)</a></li>'."\n";
-	echo '<li><a href="download.php?id='.$c['id'].'&amp;format=png&amp;1verse=1">PNG (1st verse)</a></li>'."\n";
+	foreach(array('gabc','pdf','eps','png') as $a) {
+		echo '<li><a href="download.php?id='.$c['id'].'&amp;format='.$a.'&amp;1verse=1">'.strtoupper($a).' (1st verse only)</a></li>'."\n";
+	}
 	echo "</ul>\n";
 }
-$sql1 = 'SELECT * FROM '.$db['changesets'].' WHERE chant_id = '.$c['id'].' ORDER BY time DESC';
+$sql1 = 'SELECT * FROM '.db('changesets').' WHERE chant_id = '.$c['id'].' ORDER BY time DESC';
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 if($req1->num_rows > 0 || $c['transcriber'] > '') {
 	echo "<h4>History</h4>\n<ul>\n";
diff --git a/chant_edit.php b/chant_edit.php
index 13ce3cf..a07a680 100644
--- a/chant_edit.php
+++ b/chant_edit.php
@@ -8,7 +8,7 @@ if(array_key_exists("id", $_GET)) {
 } else {
 	die('No id');
 }
-$sql1 = 'SELECT * FROM '.$db['chants'].' WHERE id = '.$id;
+$sql1 = 'SELECT * FROM '.db('chants').' WHERE id = '.$id;
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 $c = $req1->fetch_assoc();
 if(!$c) {
@@ -21,11 +21,11 @@ include('include/header.php');
 if(!$logged_in) {
 	echo "Please login";
 } elseif(count($_POST) > 0) {
-	#$mysqli->query('INSERT into '.$db['proofreading'].' VALUES ('.$id.','.$_SESSION['user_id'].','.time().')') or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
+	#$mysqli->query('INSERT into '.db('proofreading').' VALUES ('.$id.','.$_SESSION['user_id'].','.time().')') or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 } else {
 
 	$c_p = array();
-	$sql1 = 'SELECT * FROM '.$db['chant_sources'].' WHERE chant_id = '.$id;
+	$sql1 = 'SELECT * FROM '.db('chant_sources').' WHERE chant_id = '.$id;
 	$req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 	while ($s = $req1->fetch_assoc()) {
 		$c_s = array($s['source'], $s['page']);
diff --git a/download.php b/download.php
index 6780b48..ff6eb70 100644
--- a/download.php
+++ b/download.php
@@ -15,7 +15,7 @@ if(array_key_exists('1verse', $_GET) && $_GET['1verse'] == '1') {
 	$suffix = "";
 }
 
-$sql1 = 'SELECT * FROM '.$db['chants'].' WHERE id = '.$id;
+$sql1 = 'SELECT * FROM '.db('chants').' WHERE id = '.$id;
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 $c = $req1->fetch_assoc();
 if(!$c) {
@@ -54,7 +54,7 @@ if(array_key_exists('format', $_GET)) {
 			}
 		}
 		$c_p = array();
-		$sql1 = 'SELECT * FROM '.$db['chant_sources'].' WHERE chant_id = '.$id;
+		$sql1 = 'SELECT * FROM '.db('chant_sources').' WHERE chant_id = '.$id;
 		$req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 		while ($s = $req1->fetch_assoc()) {
 			$c_p[] = array($s['source'], $s['page']);
diff --git a/history.php b/history.php
index 4b3c0c6..1f6eeda 100644
--- a/history.php
+++ b/history.php
@@ -7,7 +7,7 @@ if(array_key_exists("id", $_GET)) {
 } else {
 	die('No id');
 }
-$sql1 = 'SELECT * FROM '.$db['chants'].' WHERE id = '.$id;
+$sql1 = 'SELECT * FROM '.db('chants').' WHERE id = '.$id;
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 $c = $req1->fetch_assoc();
 
@@ -15,12 +15,12 @@ $title = 'History - '.$c['incipit'];
 include('include/header.php');
 echo "<h2>$title</h2>\n";
 
-$sql1 = 'SELECT * FROM '.$db['changesets'].' WHERE chant_id = '.$id.' ORDER BY time DESC';
+$sql1 = 'SELECT * FROM '.db('changesets').' WHERE chant_id = '.$id.' ORDER BY time DESC';
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 while($m = $req1->fetch_assoc()) {
 	echo "<h4>".date("M d, Y",$m['time'])." (".username_from_id($m['user_id']).")</h4>\n";
 	echo "<p>".$m['comment']."</p>\n";
-	$sql2 = 'SELECT * FROM '.$db['changes'].' WHERE changeset = "'.$m['user_id'].'|'.$id.'|'.$m['time'].'" ORDER BY field';
+	$sql2 = 'SELECT * FROM '.db('changes').' WHERE changeset = "'.$m['user_id'].'|'.$id.'|'.$m['time'].'" ORDER BY field';
 	$req2 = $mysqli->query($sql2) or die('Erreur SQL !<br />'.$sql2.'<br />'.$mysqli->error);
 	while($f = $req2->fetch_assoc()) {
 		echo '<p><i>'.$f['field']."</i><br />\n";
diff --git a/incipit.php b/incipit.php
index 832d67d..0a84321 100644
--- a/incipit.php
+++ b/incipit.php
@@ -11,9 +11,9 @@ include('include/header.php');
 echo "<h2>$title</h2>\n";
 
 if($l) {
-	$sql1 = 'SELECT * FROM '.$db['chants'].' WHERE `incipit` LIKE "'.$l.'%" ORDER BY incipit ASC';
+	$sql1 = 'SELECT * FROM '.db('chants').' WHERE `incipit` LIKE "'.$l.'%" ORDER BY incipit ASC';
 } else {
-	$sql1 = 'SELECT * FROM '.$db['chants'].' WHERE `incipit` LIKE "" ORDER BY incipit ASC';
+	$sql1 = 'SELECT * FROM '.db('chants').' WHERE `incipit` LIKE "" ORDER BY incipit ASC';
 }
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 $chants = array();
diff --git a/include/db.php b/include/db.php
index f236e3d..ceb78f0 100644
--- a/include/db.php
+++ b/include/db.php
@@ -18,21 +18,12 @@ $mysqli = new mysqli(HOST, USER, PASSWORD, DATABASE);
 
 $mysqli->query('SET NAMES utf8');
 
+$db_prefix = 'gregobase_';
 function db($s) {
-	$db_prefix = 'gregobase_';
+	global $db_prefix;
 	return $db_prefix.$s;
 }
 
-$db_prefix = 'gregobase_';
-$db = array('booklets'      => $db_prefix.'booklets',
-            'chants'        => $db_prefix.'chants',
-            'chant_sources' => $db_prefix.'chant_sources',
-            'sources'       => $db_prefix.'sources',
-            'changes'       => $db_prefix.'changes',
-            'changesets'    => $db_prefix.'changesets',
-            'users'         => $db_prefix.'users',
-            'proofreading'  => $db_prefix.'proofreading');
-
 require_once('./wp-blog-header.php');
 $current_user = wp_get_current_user();
 $logged_in = is_user_logged_in();
diff --git a/include/header.php b/include/header.php
index a8ef618..7058f9f 100644
--- a/include/header.php
+++ b/include/header.php
@@ -117,12 +117,11 @@ echo <<<HEADER1
 <link rel='stylesheet' type='text/css' href='http://fonts.googleapis.com/css?family=Libre+Baskerville:400,700,400italic' />
 <link rel="stylesheet" type="text/css" href="style.css" />
 HEADER1;
-if(!$logged_in) {
-	echo '<script type="text/javascript" src="sha512.js"></script>
-<script type="text/javascript" src="forms.js"></script>
-';
+if(isset($custom_header)) {
+	echo $custom_header;
 }
 echo <<<HEADER2
+
 </head>
 
 <body>
diff --git a/include/sources.php b/include/sources.php
index e2ad9ad..8a1cbde 100644
--- a/include/sources.php
+++ b/include/sources.php
@@ -1,7 +1,7 @@
 <?php
 $sources = array();
 
-$sql1 = 'SELECT * FROM '.$db['sources'].' ORDER BY year,editor,title';
+$sql1 = 'SELECT * FROM '.db('sources').' ORDER BY year,editor,title';
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error());
 while ($s = $req1->fetch_assoc()) {
 	$sources[$s['id']] = array('year' => $s['year'], 'editor' => $s['editor'], 'title' => $s['title'], 'description' => $s['description'], 'caption' => $s['caption'], 'pages' => json_decode($s['pages']));
diff --git a/scores.php b/scores.php
index cd01271..9d27427 100644
--- a/scores.php
+++ b/scores.php
@@ -7,7 +7,7 @@ include('include/header.php');
 
 echo "<h3>Chants</h3>\n";
 echo "<h4>by source</h4>\n";
-$sql1 = 'SELECT * FROM '.$db['chant_sources'].' GROUP BY source';
+$sql1 = 'SELECT * FROM '.db('chant_sources').' GROUP BY source';
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 echo "<div><ul>\n";
 $used_sources = array();
@@ -19,14 +19,14 @@ foreach($sources as $id => $s) {
 		echo "<li><a href=\"source.php?id=".$id."\">".$s['year']." - ".$s['editor']." - ".$s['title']."</a></li>\n";
 	}
 }
-$sql1 = 'SELECT * FROM '.$db['chants'].' c WHERE NOT EXISTS (SELECT * FROM '.$db['chant_sources'].' cs WHERE c.id = cs.chant_id)';
+$sql1 = 'SELECT * FROM '.db('chants').' c WHERE NOT EXISTS (SELECT * FROM '.db('chant_sources').' cs WHERE c.id = cs.chant_id)';
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error());
 if($req1->num_rows > 0) {
 	echo "<li><a href=\"source.php?id=none\">No source</a></li>\n";
 }
 echo "</ul></div>\n";
 echo "<h4>by usage</h4>\n";
-$sql1 = 'SELECT * FROM '.$db['chants'].' WHERE `office-part` != "" GROUP BY `office-part` ORDER BY `office-part`';
+$sql1 = 'SELECT * FROM '.db('chants').' WHERE `office-part` != "" GROUP BY `office-part` ORDER BY `office-part`';
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error());
 echo "<div><ul>\n";
 while($s = $req1->fetch_assoc()) {
@@ -34,7 +34,7 @@ while($s = $req1->fetch_assoc()) {
 }
 echo "</ul></div>\n";
 echo "<h4>by incipit</h4>\n";
-$sql1 = 'SELECT DISTINCT UPPER(SUBSTRING(incipit,1,1)) AS letters FROM '.$db['chants'].' ORDER BY letters ASC';
+$sql1 = 'SELECT DISTINCT UPPER(SUBSTRING(incipit,1,1)) AS letters FROM '.db('chants').' ORDER BY letters ASC';
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error());
 echo "<div><ul>\n";
 while($s = $req1->fetch_assoc()) {
diff --git a/source.php b/source.php
index 98b0998..106a07a 100644
--- a/source.php
+++ b/source.php
@@ -9,13 +9,13 @@ if(array_key_exists("id", $_GET)) {
 }
 $chants = array();
 if($s == "none") {
-	$sql1 = 'SELECT * FROM '.$db['chants'].' c WHERE NOT EXISTS (SELECT * FROM '.$db['chant_sources'].' cs WHERE c.id = cs.chant_id)';
+	$sql1 = 'SELECT * FROM '.db('chants').' c WHERE NOT EXISTS (SELECT * FROM '.db('chant_sources').' cs WHERE c.id = cs.chant_id)';
 	$req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 	while($c = $req1->fetch_assoc()) {
 		$chants[''][] = array($c['id'],1,1);
 	}
 } else {
-	$sql1 = 'SELECT * FROM '.$db['chant_sources'].' WHERE `source` = "'.$s.'" ORDER BY sequence ASC';
+	$sql1 = 'SELECT * FROM '.db('chant_sources').' WHERE `source` = "'.$s.'" ORDER BY sequence ASC';
 	$req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 	while($c = $req1->fetch_assoc()) {
 		$chants[$c['page']][] = array($c['chant_id'],$c['sequence'],$c['extent']);
diff --git a/usage.php b/usage.php
index 52f989b..8439e9b 100644
--- a/usage.php
+++ b/usage.php
@@ -13,7 +13,7 @@ if(!array_key_exists($id,$txt['usage'])) {
 $title = 'Usage - '.$txt['usage'][$id];
 include('include/header.php');
 echo "<h2>$title</h2>\n";
-$sql1 = 'SELECT * FROM '.$db['chants'].' WHERE `office-part` = "'.$id.'" ORDER BY incipit ASC';
+$sql1 = 'SELECT * FROM '.db('chants').' WHERE `office-part` = "'.$id.'" ORDER BY incipit ASC';
 $req1 = $mysqli->query($sql1) or die('Erreur SQL !<br />'.$sql1.'<br />'.$mysqli->error);
 $chants = array();
 while($c = $req1->fetch_assoc()) {