diff --git a/htdocs/adherents/card_subscriptions.php b/htdocs/adherents/card_subscriptions.php
index b8f71055b3b..74f07a35818 100644
--- a/htdocs/adherents/card_subscriptions.php
+++ b/htdocs/adherents/card_subscriptions.php
@@ -887,7 +887,7 @@ if ($rowid)
                 if ($conf->banque->enabled && $conf->societe->enabled && $conf->facture->enabled)
                 {
                     print '<input type="radio" class="moreaction" id="bankviainvoice" name="paymentsave" value="bankviainvoice"'.($bankviainvoice?' checked="checked"':'');
-                    if (empty($adh->fk_soc) || empty($bankviainvoice)) print ' disabled="true"';
+                    if (empty($adh->fk_soc) || empty($bankviainvoice)) print ' disabled="disabled"';
                     print '> '.$langs->trans("MoreActionBankViaInvoice");
                     if ($adh->fk_soc) print ' ('.$langs->trans("ThirdParty").': '.$company->getNomUrl(1).')';
                     else
@@ -902,7 +902,7 @@ if ($rowid)
                 if ($conf->societe->enabled && $conf->facture->enabled)
                 {
                     print '<input type="radio" class="moreaction" id="invoiceonly" name="paymentsave" value="invoiceonly"'.($invoiceonly?' checked="checked"':'');
-                    if (empty($adh->fk_soc) || empty($bankviainvoice)) print ' disabled="true"';
+                    if (empty($adh->fk_soc) || empty($bankviainvoice)) print ' disabled="disabled"';
                     print '> '.$langs->trans("MoreActionInvoiceOnly");
                     if ($adh->fk_soc) print ' ('.$langs->trans("ThirdParty").': '.$company->getNomUrl(1).')';
                     else
diff --git a/htdocs/comm/propal/contact.php b/htdocs/comm/propal/contact.php
index ad2479cbb8e..2f00edaac72 100644
--- a/htdocs/comm/propal/contact.php
+++ b/htdocs/comm/propal/contact.php
@@ -259,7 +259,7 @@ if ($id > 0 || ! empty($ref))
 			$formcompany->selectTypeContact($propal, '', 'type','external');
 			print '</td>';
 			print '<td align="right" colspan="3" ><input type="submit" class="button" value="'.$langs->trans("Add").'"';
-			if (! $nbofcontacts) print ' disabled="true"';
+			if (! $nbofcontacts) print ' disabled="disabled"';
 			print '></td>';
 			print '</tr>';
 
diff --git a/htdocs/commande/contact.php b/htdocs/commande/contact.php
index 6e14b575201..f77d771e3f6 100644
--- a/htdocs/commande/contact.php
+++ b/htdocs/commande/contact.php
@@ -251,7 +251,7 @@ if ($id > 0 || ! empty($ref))
 			$formcompany->selectTypeContact($commande, '', 'type','external');
 			print '</td>';
 			print '<td align="right" colspan="3" ><input type="submit" class="button" value="'.$langs->trans("Add").'"';
-			if (! $nbofcontacts) print ' disabled="true"';
+			if (! $nbofcontacts) print ' disabled="disabled"';
 			print '></td>';
 			print '</tr>';
 
diff --git a/htdocs/compta/bank/ligne.php b/htdocs/compta/bank/ligne.php
index f23ecf0ec2e..623c5389e12 100644
--- a/htdocs/compta/bank/ligne.php
+++ b/htdocs/compta/bank/ligne.php
@@ -444,7 +444,7 @@ if ($result)
         if ($user->rights->banque->modifier || $user->rights->banque->consolidate)
         {
             print '<td colspan="3">';
-            print '<input name="label" class="flat" '.($objp->rappro?' disabled="true"':'').' value="';
+            print '<input name="label" class="flat" '.($objp->rappro?' disabled="disabled"':'').' value="';
             if (preg_match('/^\((.*)\)$/i',$objp->label,$reg))
             {
                 // Label generique car entre parentheses. On l'affiche en le traduisant
@@ -478,7 +478,7 @@ if ($result)
         if ($user->rights->banque->modifier)
         {
             print '<td colspan="3">';
-            print '<input name="amount" class="flat" size="10" '.($objp->rappro?' disabled="true"':'').' value="'.price($objp->amount).'"> '.$langs->trans("Currency".$conf->monnaie);
+            print '<input name="amount" class="flat" size="10" '.($objp->rappro?' disabled="disabled"':'').' value="'.price($objp->amount).'"> '.$langs->trans("Currency".$conf->monnaie);
             print '</td>';
         }
         else
@@ -510,12 +510,12 @@ if ($result)
                 print '<td colspan="3">';
                 if ($objp->rappro)
                 {
-                    print $langs->trans("AccountStatement").' <input name="num_rel_bis" class="flat" value="'.$objp->num_releve.'"'.($objp->rappro?' disabled="true"':'').'>';
+                    print $langs->trans("AccountStatement").' <input name="num_rel_bis" class="flat" value="'.$objp->num_releve.'"'.($objp->rappro?' disabled="disabled"':'').'>';
                     print '<input name="num_rel" type="hidden" value="'.$objp->num_releve.'">';
                 }
                 else
                 {
-                    print $langs->trans("AccountStatement").' <input name="num_rel" class="flat" value="'.$objp->num_releve.'"'.($objp->rappro?' disabled="true"':'').'>';
+                    print $langs->trans("AccountStatement").' <input name="num_rel" class="flat" value="'.$objp->num_releve.'"'.($objp->rappro?' disabled="disabled"':'').'>';
                 }
                 print '</td><td align="center" rowspan="2" width="20%"><input type="submit" class="button" value="'.$langs->trans("Update").'"></td>';
             }
diff --git a/htdocs/compta/facture.php b/htdocs/compta/facture.php
index a3fd3eddec4..283460b2666 100644
--- a/htdocs/compta/facture.php
+++ b/htdocs/compta/facture.php
@@ -1606,12 +1606,12 @@ if ($action == 'create')
     // Replacement
     print '<tr height="18"><td valign="middle">';
     print '<input type="radio" name="type" value="1"'.(GETPOST('type')==1?' checked="checked"':'');
-    if (! $options) print ' disabled="true"';
+    if (! $options) print ' disabled="disabled"';
     print '>';
     print '</td><td valign="middle">';
     $text=$langs->trans("InvoiceReplacementAsk").' ';
     $text.='<select class="flat" name="fac_replacement" id="fac_replacement"';
-    if (! $options) $text.=' disabled="true"';
+    if (! $options) $text.=' disabled="disabled"';
     $text.='>';
     if ($options)
     {
@@ -1630,13 +1630,13 @@ if ($action == 'create')
     // Credit note
     print '<tr height="18"><td valign="middle">';
     print '<input type="radio" name="type" value="2"'.(GETPOST('type')==2?' checked=true':'');
-    if (! $optionsav) print ' disabled="true"';
+    if (! $optionsav) print ' disabled="disabled"';
     print '>';
     print '</td><td valign="middle">';
     $text=$langs->transnoentities("InvoiceAvoirAsk").' ';
     //	$text.='<input type="text" value="">';
     $text.='<select class="flat" name="fac_avoir" id="fac_avoir"';
-    if (! $optionsav) $text.=' disabled="true"';
+    if (! $optionsav) $text.=' disabled="disabled"';
     $text.='>';
     if ($optionsav)
     {
diff --git a/htdocs/compta/facture/contact.php b/htdocs/compta/facture/contact.php
index 2c3ebe8cb49..061d6ec6018 100644
--- a/htdocs/compta/facture/contact.php
+++ b/htdocs/compta/facture/contact.php
@@ -246,7 +246,7 @@ if ($id > 0 || ! empty($ref))
 			$formcompany->selectTypeContact($facture, '', 'type','external');
 			print '</td>';
 			print '<td align="right" colspan="3"><input type="submit" class="button" value="'.$langs->trans("Add").'"';
-			if (! $nbofcontacts) print ' disabled="true"';
+			if (! $nbofcontacts) print ' disabled="disabled"';
 			print '></td>';
 			print '</tr>';
 
diff --git a/htdocs/compta/paiement.php b/htdocs/compta/paiement.php
index 1b63fb03928..3edec51a5f9 100644
--- a/htdocs/compta/paiement.php
+++ b/htdocs/compta/paiement.php
@@ -377,7 +377,7 @@ if ($action == 'create' || $action == 'confirm_paiement' || $action == 'add_paie
             print '<td>';
             if ($action == 'add_paiement')
             {
-                print '<input id="amountpayment" name="amountpaymenthidden" size="8" type="text" value="'.(empty($_POST['amountpayment'])?'':$_POST['amountpayment']).'" disabled="true">';
+                print '<input id="amountpayment" name="amountpaymenthidden" size="8" type="text" value="'.(empty($_POST['amountpayment'])?'':$_POST['amountpayment']).'" disabled="disabled">';
                 print '<input name="amountpayment" type="hidden" value="'.(empty($_POST['amountpayment'])?'':$_POST['amountpayment']).'">';
             }
             else
@@ -521,7 +521,7 @@ if ($action == 'create' || $action == 'confirm_paiement' || $action == 'add_paie
                     }
                     else
                     {
-                        print '<input type="text" size="8" name="'.$namef.'_disabled" value="'.$_POST[$namef].'" disabled="true">';
+                        print '<input type="text" size="8" name="'.$namef.'_disabled" value="'.$_POST[$namef].'" disabled="disabled">';
                         print '<input type="hidden" name="'.$namef.'" value="'.$_POST[$namef].'">';
                     }
                     print "</td>";
diff --git a/htdocs/contrat/contact.php b/htdocs/contrat/contact.php
index 0fcb7329765..c095cfca195 100644
--- a/htdocs/contrat/contact.php
+++ b/htdocs/contrat/contact.php
@@ -245,7 +245,7 @@ if ($id > 0)
 			$formcompany->selectTypeContact($contrat, '', 'type','external');
 			print '</td>';
 			print '<td align="right" colspan="3" ><input type="submit" class="button" value="'.$langs->trans("Add").'"';
-			if (! $nbofcontacts) print ' disabled="true"';
+			if (! $nbofcontacts) print ' disabled="disabled"';
 			print '></td>';
 			print '</tr>';
 
diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 5a709158e83..3d6749c6c53 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -640,7 +640,7 @@ class Form
                     if ($maxvalue && $obj->amount_ttc > $maxvalue)
                     {
                         $qualifiedlines--;
-                        $disabled=' disabled="true"';
+                        $disabled=' disabled="disabled"';
                     }
 
                     print '<option value="'.$obj->rowid.'"'.$selectstring.$disabled.'>'.$desc.' ('.price($obj->amount_ht).' '.$langs->trans("HT").' - '.price($obj->amount_ttc).' '.$langs->trans("TTC").')</option>';
@@ -713,7 +713,7 @@ class Form
                         if ($selected && $selected == $obj->rowid)
                         {
                             print '<option value="'.$obj->rowid.'"';
-                            if ($disabled) print ' disabled="true"';
+                            if ($disabled) print ' disabled="disabled"';
                             print ' selected="selected">';
                             print $contactstatic->getFullName($langs);
                             if ($showfunction && $obj->poste) print ' ('.$obj->poste.')';
@@ -722,7 +722,7 @@ class Form
                         else
                         {
                             print '<option value="'.$obj->rowid.'"';
-                            if ($disabled) print ' disabled="true"';
+                            if ($disabled) print ' disabled="disabled"';
                             print '>';
                             print $contactstatic->getFullName($langs);
                             if ($showfunction && $obj->poste) print ' ('.$obj->poste.')';
@@ -825,7 +825,7 @@ class Form
             $i = 0;
             if ($num)
             {
-            	$out.= '<select class="flat" id="'.$htmlname.'" name="'.$htmlname.'"'.($disabled?' disabled="true"':'').'>';
+            	$out.= '<select class="flat" id="'.$htmlname.'" name="'.$htmlname.'"'.($disabled?' disabled="disabled"':'').'>';
             	if ($show_empty) $out.= '<option value="-1"'.($id==-1?' selected="selected"':'').'>&nbsp;</option>'."\n";
 
             	$userstatic=new User($this->db);
@@ -844,13 +844,13 @@ class Form
                     if ((is_object($selected) && $selected->id == $obj->rowid) || (! is_object($selected) && $selected == $obj->rowid))
                     {
                         $out.= '<option value="'.$obj->rowid.'"';
-                        if ($disableline) $out.= ' disabled="true"';
+                        if ($disableline) $out.= ' disabled="disabled"';
                         $out.= ' selected="selected">';
                     }
                     else
                     {
                         $out.= '<option value="'.$obj->rowid.'"';
-                        if ($disableline) $out.= ' disabled="true"';
+                        if ($disableline) $out.= ' disabled="disabled"';
                         $out.= '>';
                     }
                     $out.= $userstatic->getFullName($langs);
@@ -897,7 +897,7 @@ class Form
     function select_produits($selected='',$htmlname='productid',$filtertype='',$limit=20,$price_level=0,$status=1,$finished=2,$selected_input_value='',$hidelabel=0)
     {
         global $langs,$conf;
-        
+
         $price_level = (! empty($price_level) ? $price_level : 0);
 
         if ($conf->global->PRODUIT_USE_SEARCH_TO_SELECT)
@@ -918,7 +918,7 @@ class Form
         {
             $this->select_produits_do($selected,$htmlname,$filtertype,$limit,$price_level,'',$status,$finished,0);
         }
-        
+
         print '<br />';
     }
 
@@ -1957,7 +1957,7 @@ class Form
         $output = '<select class="flat" name="'.$select_name.'">';
         if (is_array($cate_arbo))
         {
-            if (! sizeof($cate_arbo)) $output.= '<option value="-1" disabled="true">'.$langs->trans("NoCategoriesDefined").'</option>';
+            if (! sizeof($cate_arbo)) $output.= '<option value="-1" disabled="disabled">'.$langs->trans("NoCategoriesDefined").'</option>';
             else
             {
                 $output.= '<option value="-1">&nbsp;</option>';
@@ -2049,7 +2049,7 @@ class Form
 	                    $more.='<input type="checkbox" class="flat" id="'.$input['name'].'" name="'.$input['name'].'"';
 	                    if (! is_bool($input['value']) && $input['value'] != 'false') $more.=' checked="checked"';
 	                    if (is_bool($input['value']) && $input['value']) $more.=' checked="checked"';
-	                    if ($input['disabled']) $more.=' disabled="true"';
+	                    if ($input['disabled']) $more.=' disabled="disabled"';
 	                    $more.=' /></td>';
 	                    $more.='<td valign="top" align="left">&nbsp;</td>';
 	                    $more.='</tr>'."\n";
@@ -2063,7 +2063,7 @@ class Form
 	                        if ($i==0) $more.='<td valign="top">'.$input['label'].'</td>';
 	                        else $more.='<td>&nbsp;</td>';
 	                        $more.='<td valign="top" width="20"><input type="radio" class="flat" id="'.$input['name'].'" name="'.$input['name'].'" value="'.$selkey.'"';
-	                        if ($input['disabled']) $more.=' disabled="true"';
+	                        if ($input['disabled']) $more.=' disabled="disabled"';
 	                        $more.=' /></td>';
 	                        $more.='<td valign="top" align="left">';
 	                        $more.=$selval;
@@ -2986,7 +2986,7 @@ class Form
                 {
                     // Zone de saisie manuelle de la date
                     $retstring.='<input id="'.$prefix.'" name="'.$prefix.'" type="text" size="9" maxlength="11" value="'.$formated_date.'"';
-                    $retstring.=($disabled?' disabled="true"':'');
+                    $retstring.=($disabled?' disabled="disabled"':'');
                     $retstring.=' onChange="dpChangeDay(\''.$prefix.'\',\''.$langs->trans("FormatDateShortJava").'\'); "';  // FormatDateShort for dol_print_date/FormatDateShortJava that is same for javascript
                     $retstring.='>';
 
@@ -3012,7 +3012,7 @@ class Form
             if (empty($conf->use_javascript_ajax) || $conf->global->MAIN_POPUP_CALENDAR == "none")
             {
                 // Day
-                $retstring.='<select'.($disabled?' disabled="true"':'').' class="flat" name="'.$prefix.'day">';
+                $retstring.='<select'.($disabled?' disabled="disabled"':'').' class="flat" name="'.$prefix.'day">';
 
                 if ($empty || $set_time == -1)
                 {
@@ -3034,7 +3034,7 @@ class Form
 
                 $retstring.="</select>";
 
-                $retstring.='<select'.($disabled?' disabled="true"':'').' class="flat" name="'.$prefix.'month">';
+                $retstring.='<select'.($disabled?' disabled="disabled"':'').' class="flat" name="'.$prefix.'month">';
                 if ($empty || $set_time == -1)
                 {
                     $retstring.='<option value="0" selected="selected">&nbsp;</option>';
@@ -3052,11 +3052,11 @@ class Form
                 // Year
                 if ($empty || $set_time == -1)
                 {
-                    $retstring.='<input'.($disabled?' disabled="true"':'').' class="flat" type="text" size="3" maxlength="4" name="'.$prefix.'year" value="'.$syear.'">';
+                    $retstring.='<input'.($disabled?' disabled="disabled"':'').' class="flat" type="text" size="3" maxlength="4" name="'.$prefix.'year" value="'.$syear.'">';
                 }
                 else
                 {
-                    $retstring.='<select'.($disabled?' disabled="true"':'').' class="flat" name="'.$prefix.'year">';
+                    $retstring.='<select'.($disabled?' disabled="disabled"':'').' class="flat" name="'.$prefix.'year">';
 
                     for ($year = $syear - 5; $year < $syear + 10 ; $year++)
                     {
@@ -3080,7 +3080,7 @@ class Form
         if ($h)
         {
             // Show hour
-        	$retstring.='<select'.($disabled?' disabled="true"':'').' class="flat '.($fullday?$fullday.'hour':'').'" name="'.$prefix.'hour">';
+        	$retstring.='<select'.($disabled?' disabled="disabled"':'').' class="flat '.($fullday?$fullday.'hour':'').'" name="'.$prefix.'hour">';
             if ($empty) $retstring.='<option value="-1">&nbsp;</option>';
             for ($hour = 0; $hour < 24; $hour++)
             {
@@ -3104,7 +3104,7 @@ class Form
         if ($m)
         {
             // Show minutes
-            $retstring.='<select'.($disabled?' disabled="true"':'').' class="flat '.($fullday?$fullday.'min':'').'" name="'.$prefix.'min">';
+            $retstring.='<select'.($disabled?' disabled="disabled"':'').' class="flat '.($fullday?$fullday.'min':'').'" name="'.$prefix.'min">';
             if ($empty) $retstring.='<option value="-1">&nbsp;</option>';
             for ($min = 0; $min < 60 ; $min++)
             {
@@ -3189,7 +3189,7 @@ class Form
             $minSelected = ConvertSecondToTime($iSecond,'min');
         }
 
-        print '<select class="flat" name="'.$prefix.'hour"'.($disabled?' disabled="true"':'').'>';
+        print '<select class="flat" name="'.$prefix.'hour"'.($disabled?' disabled="disabled"':'').'>';
         for ($hour = 0; $hour < 24; $hour++)
         {
             print '<option value="'.$hour.'"';
@@ -3201,7 +3201,7 @@ class Form
         }
         print "</select>";
         print "H &nbsp;";
-        print '<select class="flat" name="'.$prefix.'min"'.($disabled?' disabled="true"':'').'>';
+        print '<select class="flat" name="'.$prefix.'min"'.($disabled?' disabled="disabled"':'').'>';
         for ($min = 0; $min <= 55; $min=$min+5)
         {
             print '<option value="'.$min.'"';
@@ -3232,7 +3232,7 @@ class Form
     {
         global $langs;
 
-        $out='<select id="'.$htmlname.'" '.($disabled?'disabled="true" ':'').'class="flat" name="'.$htmlname.'" '.($option != ''?$option:'').'>';
+        $out='<select id="'.$htmlname.'" '.($disabled?'disabled="disabled" ':'').'class="flat" name="'.$htmlname.'" '.($option != ''?$option:'').'>';
 
         if ($show_empty)
         {
@@ -3564,7 +3564,7 @@ class Form
             $i = 0;
             if ($num)
             {
-            	$out.= '<select class="flat" name="'.$htmlname.'"'.($disabled?' disabled="true"':'').'>';
+            	$out.= '<select class="flat" name="'.$htmlname.'"'.($disabled?' disabled="disabled"':'').'>';
             	if ($show_empty) $out.= '<option value="-1"'.($id==-1?' selected="selected"':'').'>&nbsp;</option>'."\n";
 
                 while ($i < $num)
@@ -3574,7 +3574,7 @@ class Form
                     if (is_array($enableonly) && sizeof($enableonly) && ! in_array($obj->rowid,$enableonly)) $disableline=1;
 
                     $out.= '<option value="'.$obj->rowid.'"';
-                    if ($disableline) $out.= ' disabled="true"';
+                    if ($disableline) $out.= ' disabled="disabled"';
                     if ((is_object($selected) && $selected->id == $obj->rowid) || (! is_object($selected) && $selected == $obj->rowid))
                     {
                         $out.= ' selected="selected"';
diff --git a/htdocs/core/class/html.formactions.class.php b/htdocs/core/class/html.formactions.class.php
index d86fd46336e..56081253519 100644
--- a/htdocs/core/class/html.formactions.class.php
+++ b/htdocs/core/class/html.formactions.class.php
@@ -80,20 +80,20 @@ class FormActions
             print 'else { document.'.$formname.'.percentageshown.disabled=false; }'."\n";
             print '}'."\n";
             print '</script>'."\n";
-            print '<select '.($canedit?'':'disabled="true" ').'name="status" id="select'.$htmlname.'" class="flat">';
+            print '<select '.($canedit?'':'disabled="disabled" ').'name="status" id="select'.$htmlname.'" class="flat">';
             foreach($listofstatus as $key => $val)
             {
                 print '<option value="'.$key.'"'.($selected == $key?' selected="selected"':'').'>'.$val.'</option>';
             }
             print '</select>';
             if ($selected == 0 || $selected == 100) $canedit=0;
-            print ' <input type="text" id="val'.$htmlname.'" name="percentageshown" class="flat hideifna" value="'.($selected>=0?$selected:'').'" size="2"'.($canedit&&($selected>=0)?'':' disabled="true"').'>';
+            print ' <input type="text" id="val'.$htmlname.'" name="percentageshown" class="flat hideifna" value="'.($selected>=0?$selected:'').'" size="2"'.($canedit&&($selected>=0)?'':' disabled="disabled"').'>';
             print '<span class="hideifna">%</span>';
             print ' <input type="hidden" name="percentage" value="'.$selected.'">';
         }
         else
         {
-            print ' <input type="text" id="val'.$htmlname.'" name="percentage" class="flat" value="'.($selected>=0?$selected:'').'" size="2"'.($canedit?'':' disabled="true"').'>%';
+            print ' <input type="text" id="val'.$htmlname.'" name="percentage" class="flat" value="'.($selected>=0?$selected:'').'" size="2"'.($canedit?'':' disabled="disabled"').'>%';
         }
     }
 
diff --git a/htdocs/core/class/html.formadmin.class.php b/htdocs/core/class/html.formadmin.class.php
index 9e43f83eea3..07ffffbef63 100644
--- a/htdocs/core/class/html.formadmin.class.php
+++ b/htdocs/core/class/html.formadmin.class.php
@@ -259,11 +259,9 @@ class FormAdmin
 			{
 				print '	selected="selected"';
 			}
-            //if ($key == 'rodolphe') print ' disabled="true"';
 			print '>';
 			if ($key == 'all') print $langs->trans("AllMenus");
 			else print $key;
-			//if ($key == 'rodolphe') print ' ('.$langs->trans("PersonalizedMenusNotSupported").')';
 			print '</option>'."\n";
 		}
 		print '</select>';
diff --git a/htdocs/core/class/html.formcompany.class.php b/htdocs/core/class/html.formcompany.class.php
index 4109c6e70a9..1b1b8c2a0e2 100644
--- a/htdocs/core/class/html.formcompany.class.php
+++ b/htdocs/core/class/html.formcompany.class.php
@@ -243,7 +243,7 @@ class FormCompany
 							// Affiche la rupture si on est en mode liste multipays
 							if (! $pays_code && $obj->code_pays)
 							{
-								$out.= '<option value="-1" disabled="true">----- '.$obj->libelle_pays." -----</option>\n";
+								$out.= '<option value="-1" disabled="disabled">----- '.$obj->libelle_pays." -----</option>\n";
 								$pays=$obj->libelle_pays;
 							}
 						}
@@ -575,14 +575,14 @@ class FormCompany
 						if ($selected > 0 && $selected == $obj->rowid)
 						{
 							print '<option value="'.$obj->rowid.'"';
-							if ($disabled) print ' disabled="true"';
+							if ($disabled) print ' disabled="disabled"';
 							print ' selected="selected">'.dol_trunc($obj->nom,24).'</option>';
 							$firstCompany = $obj->rowid;
 						}
 						else
 						{
 							print '<option value="'.$obj->rowid.'"';
-							if ($disabled) print ' disabled="true"';
+							if ($disabled) print ' disabled="disabled"';
 							print '>'.dol_trunc($obj->nom,24).'</option>';
 						}
 						$i ++;
diff --git a/htdocs/core/class/html.formfile.class.php b/htdocs/core/class/html.formfile.class.php
index 9acc0fe4c2b..1db71e01d52 100644
--- a/htdocs/core/class/html.formfile.class.php
+++ b/htdocs/core/class/html.formfile.class.php
@@ -90,11 +90,11 @@ class FormFile
             print '<input type="hidden" name="max_file_size" value="'.($max*1024).'">';
         }
         print '<input class="flat" type="file" name="userfile" size="'.$maxlength.'"';
-        print (empty($conf->global->MAIN_UPLOAD_DOC) || empty($perm)?' disabled="true"':'');
+        print (empty($conf->global->MAIN_UPLOAD_DOC) || empty($perm)?' disabled="disabled"':'');
         print '>';
         print ' &nbsp; ';
         print '<input type="submit" class="button" name="sendit" value="'.$langs->trans("Upload").'"';
-        print (empty($conf->global->MAIN_UPLOAD_DOC) || empty($perm)?' disabled="true"':'');
+        print (empty($conf->global->MAIN_UPLOAD_DOC) || empty($perm)?' disabled="disabled"':'');
         print '>';
 
         if ($addcancel)
@@ -424,7 +424,7 @@ class FormFile
             $out.= '<td align="center" colspan="'.($delallowed?'2':'1').'" class="formdocbutton">';
             $out.= '<input class="button" id="'.$forname.'_generatebutton"';
             $out.= ' type="submit" value="'.$buttonlabel.'"';
-            if (! $allowgenifempty && ! is_array($modellist) && empty($modellist)) $out.= ' disabled="true"';
+            if (! $allowgenifempty && ! is_array($modellist) && empty($modellist)) $out.= ' disabled="disabled"';
             $out.= '>';
             if ($allowgenifempty && ! is_array($modellist) && empty($modellist) && $modulepart != 'unpaid')
             {
diff --git a/htdocs/core/class/html.formother.class.php b/htdocs/core/class/html.formother.class.php
index fbee51c11d1..7d0357c2d68 100644
--- a/htdocs/core/class/html.formother.class.php
+++ b/htdocs/core/class/html.formother.class.php
@@ -211,7 +211,7 @@ class FormOther
 	 */
 	function select_percent($selected=0,$htmlname='percent',$disabled=0,$increment=5,$start=0,$end=100)
 	{
-		$return = '<select class="flat" name="'.$htmlname.'" '.($disabled?'disabled="true"':'').'>';
+		$return = '<select class="flat" name="'.$htmlname.'" '.($disabled?'disabled="disabled"':'').'>';
 
 		for ($i = $start ; $i <= $end ; $i += $increment)
 		{
@@ -674,7 +674,7 @@ function PLineSelect(&$inc, $parent, $lines, $level=0, $selectedtask=0, $selecte
 			{
 				if ($lines[$i]->fk_project != $lastprojectid)
 				{
-					if ($i > 0 && $conf->browser->firefox) print '<option value="0" disabled="true">----------</option>';
+					if ($i > 0 && $conf->browser->firefox) print '<option value="0" disabled="disabled">----------</option>';
 					print '<option value="'.$lines[$i]->fk_project.'_0"';
 					if ($selectedproject == $lines[$i]->fk_project) print ' selected="selected"';
 					print '>';	// Project -> Task
diff --git a/htdocs/ecm/class/htmlecm.form.class.php b/htdocs/ecm/class/htmlecm.form.class.php
index 841f98302c0..cf4fdb75133 100644
--- a/htdocs/ecm/class/htmlecm.form.class.php
+++ b/htdocs/ecm/class/htmlecm.form.class.php
@@ -63,7 +63,7 @@ class FormEcm
 		$output = '<select class="flat" name="'.$select_name.'">';
 		if (is_array($cate_arbo))
 		{
-			if (! sizeof($cate_arbo)) $output.= '<option value="-1" disabled="true">'.$langs->trans("NoCategoriesDefined").'</option>';
+			if (! sizeof($cate_arbo)) $output.= '<option value="-1" disabled="disabled">'.$langs->trans("NoCategoriesDefined").'</option>';
 			else
 			{
 				$output.= '<option value="-1">&nbsp;</option>';
diff --git a/htdocs/exports/index.php b/htdocs/exports/index.php
index 1a5644d96e3..628936f8059 100644
--- a/htdocs/exports/index.php
+++ b/htdocs/exports/index.php
@@ -135,7 +135,7 @@ if (sizeof($export->array_export_code))
 	}
 	/*
    	print '<center><form action="'.DOL_URL_ROOT.'/exports/export.php?leftmenu=export"><input type="submit" class="button" value="'.$langs->trans("NewExport").'"';
-   	print ($user->rights->export->creer?'':' disabled="true"');
+   	print ($user->rights->export->creer?'':' disabled="disabled"');
    	print '></form></center>';
 	*/
 }
diff --git a/htdocs/fichinter/contact.php b/htdocs/fichinter/contact.php
index 60d756f1a6d..93f7c29158a 100644
--- a/htdocs/fichinter/contact.php
+++ b/htdocs/fichinter/contact.php
@@ -236,7 +236,7 @@ if ($id > 0)
 			$formcompany->selectTypeContact($fichinter, '', 'type','external');
 			print '</td>';
 			print '<td align="right" colspan="3" ><input type="submit" class="button" value="'.$langs->trans("Add").'"';
-			if (! $nbofcontacts) print ' disabled="true"';
+			if (! $nbofcontacts) print ' disabled="disabled"';
 			print '></td>';
 			print '</tr>';
 
diff --git a/htdocs/fourn/commande/contact.php b/htdocs/fourn/commande/contact.php
index b2395f656f2..2e634a2f403 100644
--- a/htdocs/fourn/commande/contact.php
+++ b/htdocs/fourn/commande/contact.php
@@ -243,7 +243,7 @@ if ($id > 0 || ! empty($ref))
 			$formcompany->selectTypeContact($commande, '', 'type','external');
 			print '</td>';
 			print '<td align="right" colspan="3" ><input type="submit" class="button" value="'.$langs->trans("Add").'"';
-			if (! $nbofcontacts) print ' disabled="true"';
+			if (! $nbofcontacts) print ' disabled="disabled"';
 			print '></td>';
 			print '</tr>';
 
diff --git a/htdocs/fourn/commande/dispatch.php b/htdocs/fourn/commande/dispatch.php
index f97c9d38f78..68b01ef2310 100644
--- a/htdocs/fourn/commande/dispatch.php
+++ b/htdocs/fourn/commande/dispatch.php
@@ -314,7 +314,7 @@ if ($id > 0 || ! empty($ref))
 				print '" class="flat"><br><br>';
 
 				print '<center><input type="submit" class="button" value="'.$langs->trans("DispatchVerb").'"';
-				if (sizeof($listwarehouses) <= 0) print ' disabled="true"';
+				if (count($listwarehouses) <= 0) print ' disabled="disabled"';
 				print '></center>';
 			}
 			if (! $nbproduct && $nbfreeproduct)
diff --git a/htdocs/fourn/facture/contact.php b/htdocs/fourn/facture/contact.php
index c6add125897..ffbf5966e73 100644
--- a/htdocs/fourn/facture/contact.php
+++ b/htdocs/fourn/facture/contact.php
@@ -237,7 +237,7 @@ if ($id > 0)
 			$formcompany->selectTypeContact($facture, '', 'type','external');
 			print '</td>';
 			print '<td align="right" colspan="3" ><input type="submit" class="button" value="'.$langs->trans("Add").'"';
-			if (! $nbofcontacts) print ' disabled="true"';
+			if (! $nbofcontacts) print ' disabled="disabled"';
 			print '></td>';
 			print '</tr>';
 
diff --git a/htdocs/fourn/facture/fiche.php b/htdocs/fourn/facture/fiche.php
index 4c8f0238178..cf4a5a568d9 100644
--- a/htdocs/fourn/facture/fiche.php
+++ b/htdocs/fourn/facture/fiche.php
@@ -997,12 +997,12 @@ if ($_GET['action'] == 'create')
 	// Replacement
 	print '<tr height="18"><td valign="middle">';
 	print '<input type="radio" name="type" value="1"'.($_POST['type']==1?' checked="checked"':'');
-	if (! $options) print ' disabled="true"';
+	if (! $options) print ' disabled="disabled"';
 	print '>';
 	print '</td><td valign="middle">';
 	$text=$langs->trans("InvoiceReplacementAsk").' ';
 	$text.='<select class="flat" name="fac_replacement"';
-	if (! $options) $text.=' disabled="true"';
+	if (! $options) $text.=' disabled="disabled"';
 	$text.='>';
 	if ($options)
 	{
@@ -1021,13 +1021,13 @@ if ($_GET['action'] == 'create')
 		// Credit note
 	print '<tr height="18"><td valign="middle">';
 	print '<input type="radio" name="type" value="2"'.($_POST['type']==2?' checked=true':'');
-	if (! $optionsav) print ' disabled="true"';
+	if (! $optionsav) print ' disabled="disabled"';
 	print '>';
 	print '</td><td valign="middle">';
 	$text=$langs->transnoentities("InvoiceAvoirAsk").' ';
 	//	$text.='<input type="text" value="">';
 	$text.='<select class="flat" name="fac_avoir"';
-	if (! $optionsav) $text.=' disabled="true"';
+	if (! $optionsav) $text.=' disabled="disabled"';
 	$text.='>';
 	if ($optionsav)
 	{
diff --git a/htdocs/imports/import.php b/htdocs/imports/import.php
index af9c2600519..a1fe048009b 100644
--- a/htdocs/imports/import.php
+++ b/htdocs/imports/import.php
@@ -1531,7 +1531,7 @@ if ($step == 6 && $datatoimport)
 	print '<tr><td>';
 	print $langs->trans("Option");
 	print '</td><td>';
-	print '<input type="checkbox" name="excludefirstline" value="1" disabled="true"';
+	print '<input type="checkbox" name="excludefirstline" value="1" disabled="disabled"';
 	print ($excludefirstline?' checked="checked"':'');
 	print '>';
 	print ' '.$langs->trans("DoNotImportFirstLine");
diff --git a/htdocs/install/etape0.php b/htdocs/install/etape0.php
index 21edb141d25..593e99d4f5c 100644
--- a/htdocs/install/etape0.php
+++ b/htdocs/install/etape0.php
@@ -282,7 +282,7 @@ if (! $error && $db->connected)
 					$selected="";
 				}
 				if (! $linedisabled) $nbofchoice++;
-				print '<option value="'.$characterSet['charset'].'" '.$selected.($linedisabled?' disabled="true"':'').'>'.$characterSet['charset'].' ('.$characterSet['description'].')</option>';
+				print '<option value="'.$characterSet['charset'].'" '.$selected.($linedisabled?' disabled="disabled"':'').'>'.$characterSet['charset'].' ('.$characterSet['description'].')</option>';
 			}
 			print '</select>';
 			if ($disabled=="disabled")
@@ -332,7 +332,7 @@ if (! $error && $db->connected)
 					$selected="";
 				}
                 if (! $linedisabled) $nbofchoice++;
-				print '<option value="'.$collation['collation'].'" '.$selected.($linedisabled?' disabled="true"':'').'>'.$collation['collation'].'</option>';
+				print '<option value="'.$collation['collation'].'" '.$selected.($linedisabled?' disabled="disabled"':'').'>'.$collation['collation'].'</option>';
 			}
 			print '</select>';
 			if ($disabled=="disabled"){
diff --git a/htdocs/install/fileconf.php b/htdocs/install/fileconf.php
index 34e0e27fdc9..88c95a01d7b 100644
--- a/htdocs/install/fileconf.php
+++ b/htdocs/install/fileconf.php
@@ -125,7 +125,7 @@ if (! empty($force_install_message))
 		<td class="label" valign="top">
 		<?php
 		if ($force_install_noedit) print '<input type="hidden" value="'.$dolibarr_main_document_root.'" name="main_dir">';
-		print '<input type="text" size="60" value="'.$dolibarr_main_document_root.'"'.(empty($force_install_noedit)?'':' disabled="true"').' name="main_dir'.(empty($force_install_noedit)?'':'_bis').'">';
+		print '<input type="text" size="60" value="'.$dolibarr_main_document_root.'"'.(empty($force_install_noedit)?'':' disabled="disabled"').' name="main_dir'.(empty($force_install_noedit)?'':'_bis').'">';
 		?>
 		</td>
 		<td class="comment"><?php
@@ -161,7 +161,7 @@ if (! empty($force_install_message))
 		<td class="label" valign="top">
 		<?php
 		if ($force_install_noedit) print '<input type="hidden" value="'.$dolibarr_main_data_root.'" name="main_data_dir">';
-		print '<input type="text" size="60" value="'.$dolibarr_main_data_root.'"'.(empty($force_install_noedit)?'':' disabled="true"').' name="main_data_dir'.(empty($force_install_noedit)?'':'_bis').'">';
+		print '<input type="text" size="60" value="'.$dolibarr_main_data_root.'"'.(empty($force_install_noedit)?'':' disabled="disabled"').' name="main_data_dir'.(empty($force_install_noedit)?'':'_bis').'">';
 		?>
 		</td>
 		<td class="comment"><?php
@@ -210,7 +210,7 @@ if (empty($dolibarr_main_url_root))
 		<td valign="top" class="label">
 		<?php
 		if ($force_install_noedit) print '<input type="hidden" value="'.$dolibarr_main_url_root.'" name="main_url">';
-		print '<input type="text" size="60" value="'.$dolibarr_main_url_root.'"'.(empty($force_install_noedit)?'':' disabled="true"').' name="main_url'.(empty($force_install_noedit)?'':'_bis').'">';
+		print '<input type="text" size="60" value="'.$dolibarr_main_url_root.'"'.(empty($force_install_noedit)?'':' disabled="disabled"').' name="main_url'.(empty($force_install_noedit)?'':'_bis').'">';
 		?>
 		</td>
 		<td class="comment"><?php print $langs->trans("Examples").":<br>"; ?>
@@ -308,7 +308,7 @@ if (! empty($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] == 'on') {   // Enabled if t
         }
 
         if ($force_install_noedit && $force_install_type) print '<input id="db_type" type="hidden" value="'.$force_install_type.'" name="db_type">';
-        print '<select id="db_type" name="db_type'.(empty($force_install_noedit) || empty($force_install_type)?'':'_bis').'"'.($force_install_noedit && $force_install_type?' disabled="true"':'').'>';
+        print '<select id="db_type" name="db_type'.(empty($force_install_noedit) || empty($force_install_type)?'':'_bis').'"'.($force_install_noedit && $force_install_type?' disabled="disabled"':'').'>';
 		print $option;
 		print '</select>';
 
diff --git a/htdocs/lib/project.lib.php b/htdocs/lib/project.lib.php
index 31d1d0dda47..57b34958cc2 100644
--- a/htdocs/lib/project.lib.php
+++ b/htdocs/lib/project.lib.php
@@ -214,7 +214,7 @@ function select_projects($socid=-1, $selected='', $htmlname='projectid')
 							$disabled=1;
 							$labeltoshow.=' - '.$langs->trans("LinkedToAnotherCompany");
 						}
-						if ($disabled==1) print ' disabled="true"';
+						if ($disabled==1) print ' disabled="disabled"';
 						else $labeltoshow.=' - '.dol_trunc($obj->title,12);
 						//if ($obj->public) $labeltoshow.=' ('.$langs->trans("Public").')';
 						//else $labeltoshow.=' ('.$langs->trans("Private").')';
@@ -327,7 +327,7 @@ function PLinesb(&$inc, $parent, $lines, &$level, &$projectsrole, &$tasksrole, $
 			print $form->select_date('',$lines[$i]->id,'','','',"addtime",1,0,1,$disabledtask);
 			print '&nbsp;&nbsp;&nbsp;';
 			print $form->select_duration($lines[$i]->id,'',$disabledtask);
-			print '&nbsp;<input type="submit" class="button"'.($disabledtask?' disabled="true"':'').' value="'.$langs->trans("Add").'">';
+			print '&nbsp;<input type="submit" class="button"'.($disabledtask?' disabled="disabled"':'').' value="'.$langs->trans("Add").'">';
             if ($disabledtask) print '('.$langs->trans("TaskIsNotAffectedToYou").')';
 			if ((! $lines[$i]->public) && $disabledproject) print '('.$langs->trans("YouAreNotContactOfProject").')';
 			print '</td>';
@@ -373,9 +373,9 @@ function PLines(&$inc, $parent, &$lines, &$level, $var, $showproject, &$taskrole
 	$projectsArrayId=explode(',',$projectsListId);
 
 	$numlines=sizeof($lines);
-	
+
 	$total=0;
-	
+
 	for ($i = 0 ; $i < $numlines ; $i++)
 	{
 		if ($parent == 0) $level = 0;
@@ -502,7 +502,7 @@ function PLines(&$inc, $parent, &$lines, &$level, $var, $showproject, &$taskrole
 		print '<td></td>';
 		print '<td align="right" nowrap="nowrap" class="liste_total">'.ConvertSecondToTime($total).'</td></tr>';
 	}
-	
+
 	return $inc;
 }
 
diff --git a/htdocs/product/class/html.formproduct.class.php b/htdocs/product/class/html.formproduct.class.php
index b34fbcf30b7..6feb71c01ae 100644
--- a/htdocs/product/class/html.formproduct.class.php
+++ b/htdocs/product/class/html.formproduct.class.php
@@ -115,7 +115,7 @@ class FormProduct
 
 		$this->loadWarehouses($fk_product);
 
-		print '<select class="flat"'.($disabled?' disabled="true"':'').' name="'.($htmlname.($disabled?'_disabled':'')).'">';
+		print '<select class="flat"'.($disabled?' disabled="disabled"':'').' name="'.($htmlname.($disabled?'_disabled':'')).'">';
 		if ($empty) print '<option value="">&nbsp;</option>';
 		foreach($this->cache_warehouses as $id => $arraytypes)
 		{
diff --git a/htdocs/projet/contact.php b/htdocs/projet/contact.php
index 0bfa0ef5a48..6b5475957a7 100644
--- a/htdocs/projet/contact.php
+++ b/htdocs/projet/contact.php
@@ -264,7 +264,7 @@ if ($id > 0 || ! empty($ref))
 				$formcompany->selectTypeContact($project, '', 'type','external','rowid');
 				print '</td>';
 				print '<td align="right" colspan="3" ><input type="submit" class="button" value="'.$langs->trans("Add").'"';
-				if (! $nbofcontacts) print ' disabled="true"';
+				if (! $nbofcontacts) print ' disabled="disabled"';
 				print '></td>';
 				print '</tr>';
 
diff --git a/htdocs/projet/tasks/contact.php b/htdocs/projet/tasks/contact.php
index ca6814ed2b5..466bc02c016 100644
--- a/htdocs/projet/tasks/contact.php
+++ b/htdocs/projet/tasks/contact.php
@@ -265,7 +265,7 @@ if ($id > 0 || ! empty($ref))
 				$formcompany->selectTypeContact($task, '', 'type','external','rowid');
 				print '</td>';
 				print '<td align="right" colspan="3" ><input type="submit" class="button" value="'.$langs->trans("Add").'"';
-				if (! $nbofcontacts) print ' disabled="true"';
+				if (! $nbofcontacts) print ' disabled="disabled"';
 				print '></td>';
 				print '</tr>';
 
diff --git a/htdocs/public/demo/index.php b/htdocs/public/demo/index.php
index 3d19b0a1dea..099431ca9e8 100644
--- a/htdocs/public/demo/index.php
+++ b/htdocs/public/demo/index.php
@@ -273,7 +273,7 @@ foreach ($demoprofiles as $profilarray)
             $modulo=($j % $nbcolsmod);
 		    if ($modulo == 0) print '<tr>';
             print '<td><input type="checkbox" class="checkbox" name="'.$modulekeyname.'" value="1"';
-            if (in_array($modulekeyname,$alwaysuncheckedmodules)) print ' disabled="true"';
+            if (in_array($modulekeyname,$alwaysuncheckedmodules)) print ' disabled="disabled"';
             if (! in_array($modulekeyname,$alwaysuncheckedmodules)  && (! in_array($modulekeyname,$listofdisabledmodules) || in_array($modulekeyname,$alwayscheckedmodules))) print ' checked="checked"';
             print '>'.$val->getName().' &nbsp;';
             print '<!-- id='.$val->numero.' -->';
diff --git a/htdocs/user/param_ihm.php b/htdocs/user/param_ihm.php
index 3bcb27df726..c7a1e8fea53 100644
--- a/htdocs/user/param_ihm.php
+++ b/htdocs/user/param_ihm.php
@@ -168,7 +168,7 @@ if ($_GET["action"] == 'edit')
     print ($conf->global->MAIN_LANG_DEFAULT=='auto'?$langs->trans("AutoDetectLang"):$langs->trans("Language_".$conf->global->MAIN_LANG_DEFAULT));
     print '</td>';
     print '<td align="left" nowrap="nowrap" width="20%"><input '.$bc[$var].' name="check_MAIN_LANG_DEFAULT" type="checkbox" '.($fuser->conf->MAIN_LANG_DEFAULT?" checked":"");
-    print ! empty($dolibarr_main_demo)?' disabled="true"':'';	// Disabled for demo
+    print ! empty($dolibarr_main_demo)?' disabled="disabled"':'';	// Disabled for demo
     print '> '.$langs->trans("UsePersonalValue").'</td>';
     print '<td>';
     print $formadmin->select_language($fuser->conf->MAIN_LANG_DEFAULT,'main_lang_default',1);
@@ -179,7 +179,7 @@ if ($_GET["action"] == 'edit')
     print '<tr '.$bc[$var].'><td>'.$langs->trans("MaxSizeList").'</td>';
     print '<td>'.$conf->global->MAIN_SIZE_LISTE_LIMIT.'</td>';
     print '<td align="left" nowrap="nowrap" width="20%"><input '.$bc[$var].' name="check_SIZE_LISTE_LIMIT" type="checkbox" '.($fuser->conf->MAIN_SIZE_LISTE_LIMIT?" checked":"");
-    print ! empty($dolibarr_main_demo)?' disabled="true"':'';	// Disabled for demo
+    print ! empty($dolibarr_main_demo)?' disabled="disabled"':'';	// Disabled for demo
     print '> '.$langs->trans("UsePersonalValue").'</td>';
     print '<td><input class="flat" name="main_size_liste_limit" size="4" value="' . $fuser->conf->SIZE_LISTE_LIMIT . '"></td></tr>';