diff --git a/htdocs/margin/agentMargins.php b/htdocs/margin/agentMargins.php
index ece6bd192db..5e65af70e79 100644
--- a/htdocs/margin/agentMargins.php
+++ b/htdocs/margin/agentMargins.php
@@ -93,7 +93,7 @@ print '<td width="20%">';
 $form->select_date($enddate,'enddate','','',1,"sel",1,1);
 print '</td>';
 print '<td style="text-align: center;">';
-print '<input type="submit" value="'.$langs->trans('Launch').'" />';
+print '<input type="submit" class="button" value="'.$langs->trans('Launch').'" />';
 print '</td></tr>';
 
 // Total Margin
@@ -220,7 +220,7 @@ if ($result)
 			if (! empty($conf->global->DISPLAY_MARK_RATES))
 				print "<td align=\"right\">".(($markRate === '')?'n/a':price($markRate)."%")."</td>\n";
 			print "</tr>\n";
-			
+
 			$i++;
 
 			$cumul_achat += round($objp->buying_price, $rounding);
diff --git a/htdocs/margin/customerMargins.php b/htdocs/margin/customerMargins.php
index 805b8824267..06a0180a4b4 100644
--- a/htdocs/margin/customerMargins.php
+++ b/htdocs/margin/customerMargins.php
@@ -115,7 +115,7 @@ print '<td width="20%">';
 $form->select_date($enddate,'enddate','','',1,"sel",1,1);
 print '</td>';
 print '<td style="text-align: center;">';
-print '<input type="submit" value="'.$langs->trans('Launch').'" />';
+print '<input type="submit" class="button" value="'.$langs->trans('Launch').'" />';
 print '</td></tr>';
 
 // Total Margin
diff --git a/htdocs/margin/productMargins.php b/htdocs/margin/productMargins.php
index 9054e731529..183aa359c33 100644
--- a/htdocs/margin/productMargins.php
+++ b/htdocs/margin/productMargins.php
@@ -117,7 +117,7 @@ print '<td width="20%">';
 $form->select_date($enddate,'enddate','','',1,"sel",1,1);
 print '</td>';
 print '<td style="text-align: center;">';
-print '<input type="submit" value="'.$langs->trans('Launch').'" />';
+print '<input type="submit" class="button" value="'.$langs->trans('Launch').'" />';
 print '</td></tr>';
 
 // Total Margin
@@ -216,7 +216,7 @@ if ($result)
 
 			$var=!$var;
 
-			print "<tr $bc[$var]>";
+			print "<tr ".$bc[$var].">";
 			if ($id > 0) {
 				print '<td>';
 				$invoicestatic->id=$objp->facid;