diff --git a/htdocs/lib/lib_head.js b/htdocs/lib/lib_head.js
index 550b34a568875acd108f4d2e554c97c0704435f8..d30054234dfeba84eab8df573c551308683b2f5a 100644
--- a/htdocs/lib/lib_head.js
+++ b/htdocs/lib/lib_head.js
@@ -692,7 +692,7 @@ function dialogConfirm(linkurl,message,ok,cancel,objectID) {
 		width:300,
 		okLabel: ok,
 		cancelLabel: cancel,
-		buttonClass: "button",
+		buttonClass: "buttonajax",
 		id: objectID,
 		destroyOnClose: true,
 		cancel:function(win){},
diff --git a/htdocs/theme/auguria/auguria.css.php b/htdocs/theme/auguria/auguria.css.php
index 06aab29f225803744c2ed494c5c7d0f155d05b40..12807be0e70824b5f7ffa26bc61e3f1e69b3ae11 100644
--- a/htdocs/theme/auguria/auguria.css.php
+++ b/htdocs/theme/auguria/auguria.css.php
@@ -103,6 +103,15 @@ select.flat
     padding: 0px 0px 0px 0px;
     margin: 0px 0px 0px 0px;
 }
+.buttonajax
+{
+	font-size: 100%;
+	border: 0px;
+	background-image : url(<?php echo $dolibarr_main_url_root.'/theme/auguria/img/button_bg.png' ?>);
+	background-position : bottom;
+    padding: 0px 0px 0px 0px;
+    margin: 0px 0px 0px 0px;
+}
 form
 {
     padding: 0em 0em 0em 0em;
diff --git a/htdocs/theme/eldy/eldy.css.php b/htdocs/theme/eldy/eldy.css.php
index 49c0e6b59df61cb50fda0258b44c22268925524c..443a957d67f182bf083e58496e73432edb8d7e22 100644
--- a/htdocs/theme/eldy/eldy.css.php
+++ b/htdocs/theme/eldy/eldy.css.php
@@ -120,6 +120,16 @@ select.flat
     padding: 0px 0px 0px 0px;
     margin: 0px 0px 0px 0px;
 }
+.buttonajax
+{
+    font-size: 12px;
+    font-family: helvetica, verdana, arial, sans-serif;
+	border: 0px;
+	background-image: url(<?php echo $dolibarr_main_url_root.'/theme/eldy/img/button_bg.png' ?>);
+	background-position: bottom;
+    padding: 0px 0px 0px 0px;
+    margin: 0px 0px 0px 0px;
+}
 form
 {
     padding: 0em 0em 0em 0em;
diff --git a/htdocs/theme/freelug/freelug.css.php b/htdocs/theme/freelug/freelug.css.php
index 97f74082d4892172e3c656917909957ffabfa726..2286d216043b1e532cc370f2e1e80f0eed9ff820 100644
--- a/htdocs/theme/freelug/freelug.css.php
+++ b/htdocs/theme/freelug/freelug.css.php
@@ -113,7 +113,19 @@ select.flat
 	background-position: bottom;
 	background-repeat: repeat-x;
 }
-
+.buttonajax  {
+	font-size: 11px;
+	font-family: arial,verdana,heletica, sans-serif;
+    padding: 0px 2px 0px 2px;
+    margin: 0px 0px 0px 0px; 
+	border-left: 1px solid #cccccc;
+	border-right: 1px solid #aaaaaa;
+	border-top: 1px solid #dddddd;
+	border-bottom: 1px solid #aaaaaa;
+	background-image: url(<?php echo $dolibarr_main_url_root.'/theme/freelug/img/button_bg.png' ?>);
+	background-position: bottom;
+	background-repeat: repeat-x;
+}
 form
 {
     padding: 0px 0px 0px 0px;
diff --git a/htdocs/theme/yellow/yellow.css.php b/htdocs/theme/yellow/yellow.css.php
index 50a6068747a4670598c1080fa89ece3319e645a1..4c0acc30c8b3c2de28063e564251c71b444a793e 100644
--- a/htdocs/theme/yellow/yellow.css.php
+++ b/htdocs/theme/yellow/yellow.css.php
@@ -104,6 +104,15 @@ select.flat
 	background-image : url(/theme/yellow/img/button_bg.png);
 	background-position : bottom;
 }
+.buttonajax
+{
+	font-family: arial,verdana,helvetica, sans-serif;
+	font-size: 100%;
+	font-weight: normal;
+	border: 1px solid #bbbb99;
+	background-image : url(/theme/yellow/img/button_bg.png);
+	background-position : bottom;
+}
 form
 {
     padding: 0em 0em 0em 0em;