diff --git a/htdocs/projet/activity/perweek.php b/htdocs/projet/activity/perweek.php
index 0152f968c0c..0b6f23c3bf6 100644
--- a/htdocs/projet/activity/perweek.php
+++ b/htdocs/projet/activity/perweek.php
@@ -446,7 +446,7 @@ $nav = '<a class="inline-block valignmiddle" href="?year='.$prev_year."&month=".
 $nav .= ' <span id="month_name">'.dol_print_date(dol_mktime(0, 0, 0, $first_month, $first_day, $first_year), "%Y").", ".$langs->trans("WeekShort")." ".$week." </span>\n";
 $nav .= '<a class="inline-block valignmiddle" href="?year='.$next_year."&month=".$next_month."&day=".$next_day.$param.'">'.img_next($langs->trans("Next"))."</a>\n";
 $nav .= ' '.$form->selectDate(-1, '', 0, 0, 2, "addtime", 1, 1).' ';
-$nav .= ' <button type="submit" name="submitdateselect" value="x" class="bordertransp"><span class="fa fa-search"></span></button>';
+$nav .= ' <button type="submit" name="submitdateselect" value="x" class="nobordertransp button_search_x"><span class="fa fa-search"></span></button>';
 
 $picto = 'clock';
 
diff --git a/htdocs/theme/md/style.css.php b/htdocs/theme/md/style.css.php
index 4c5748860db..db65e797f95 100644
--- a/htdocs/theme/md/style.css.php
+++ b/htdocs/theme/md/style.css.php
@@ -613,6 +613,9 @@ td.onholidaymorning, td.onholidayafternoon {
 td.onholidayallday {
 	background-color: #f4eede;
 }
+td.onholidayallday:not(.weekend) input {
+	background-color: #f8f7f0;
+}
 td.leftborder, td.hide0 {
 	border-left: 1px solid #ccc;
 }
@@ -622,6 +625,13 @@ td.leftborder, td.hide6 {
 td.rightborder {
 	border-right: 1px solid #ccc;
 }
+td.weekend {	/* must be after td.onholidayallday */
+	background-color: #eee;
+}
+td.weekend input {
+	background-color: #f8f8f8;
+}
+
 
 td.amount, span.amount, div.amount, b.amount {
 	color: #006666;