diff --git a/pandora_console/general/header.php b/pandora_console/general/header.php
index a983ebafbd..c158ec087d 100644
--- a/pandora_console/general/header.php
+++ b/pandora_console/general/header.php
@@ -241,6 +241,7 @@ config_check();
 				if ($check_minor_release_available) {
 					set_pandora_error_for_header('There are one or more minor releases waiting for update, there are required administrator permissions', 'minor release/s available');
 				}
+				echo '<div id="alert_messages" style="display: none"></div>';
 
 				if ($config["alert_cnt"] > 0) {
 					$maintenance_link = 'javascript:';
diff --git a/pandora_console/include/javascript/jquery.pandora.js b/pandora_console/include/javascript/jquery.pandora.js
index 8e1973846c..9bcbe1a8f9 100644
--- a/pandora_console/include/javascript/jquery.pandora.js
+++ b/pandora_console/include/javascript/jquery.pandora.js
@@ -59,24 +59,14 @@ $(document).ready (function () {
 	});
 
 	$("a.show_systemalert_dialog").click (function () {
+		$('body').append( "<div id='opacidad' style='position:fixed;background:black;opacity:0.6;z-index:1'></div>" );
 		jQuery.get ("ajax.php",
 			{"page": "operation/system_alert"},
 				function (data, status) {
-					$("#alert_messages").html(data);
-					$("#alert_messages").dialog({
-						resizable: false,
-						draggable: true,
-						width: 450,
-						modal: true,
-						overlay: {
-							opacity: 0.5,
-							background: "black"
-						},
-						open: function (event, ui) {
-							dialog_open = this;
-						}
-					});
-					$("#alert_messages").css('padding','0px');
+					$("#alert_messages").hide ()
+						.empty ()
+						.append (data)
+						.show ();
 				},
 				"html"
 			);
diff --git a/pandora_console/include/styles/pandora.css b/pandora_console/include/styles/pandora.css
index 9246d946d5..56f1cf631f 100644
--- a/pandora_console/include/styles/pandora.css
+++ b/pandora_console/include/styles/pandora.css
@@ -3595,8 +3595,10 @@ div.simple_value > a > span.text p
 	border-bottom-left-radius: 5px;
 	z-index:3;
 	position:fixed;
-	width:650px;
-	top: 30%;
+	width:750px;
+	max-width:750px;
+	min-width:750px;
+	top: 20%;
 	background:white;
 }
 .modalheader{
diff --git a/pandora_console/include/styles/pandora_black.css b/pandora_console/include/styles/pandora_black.css
index a6c899860a..fea5aca60b 100644
--- a/pandora_console/include/styles/pandora_black.css
+++ b/pandora_console/include/styles/pandora_black.css
@@ -3219,13 +3219,12 @@ table#policy_modules td * {
 	-webkit-border-bottom-left-radius: 5px;
 	border-bottom-right-radius: 5px;
 	border-bottom-left-radius: 5px;
-	z-index:2;
-	left: 50%;
-	top: 50%;
-	transform: translate(-50%, -50%);
-	-webkit-transform: translate(-50%, -50%);
+	z-index:3;
 	position:fixed;
-	width:650px;
+	width:750px;
+	max-width:750px;
+	min-width:750px;
+	top: 20%;
 	background:white;
 }
 .modalheader{
diff --git a/pandora_console/include/styles/pandora_green_old.css b/pandora_console/include/styles/pandora_green_old.css
index b82020a161..90d15eb0d7 100644
--- a/pandora_console/include/styles/pandora_green_old.css
+++ b/pandora_console/include/styles/pandora_green_old.css
@@ -3222,13 +3222,12 @@ table#policy_modules td * {
 	-webkit-border-bottom-left-radius: 5px;
 	border-bottom-right-radius: 5px;
 	border-bottom-left-radius: 5px;
-	z-index:2;
-	left: 50%;
-	top: 50%;
-	transform: translate(-50%, -50%);
-	-webkit-transform: translate(-50%, -50%);
+	z-index:3;
 	position:fixed;
-	width:650px;
+	width:750px;
+	max-width:750px;
+	min-width:750px;
+	top: 20%;
 	background:white;
 }
 .modalheader{
diff --git a/pandora_console/index.php b/pandora_console/index.php
index 2765e56d8d..5b52479ac3 100755
--- a/pandora_console/index.php
+++ b/pandora_console/index.php
@@ -933,7 +933,6 @@ if ($config["pure"] == 0) {
 	echo '</div>';
 }
 
-echo '<div id="alert_messages" style="display: none"></div>';
 /// Clippy function
 require_once('include/functions_clippy.php');
 clippy_start($sec2);
diff --git a/pandora_console/operation/system_alert.php b/pandora_console/operation/system_alert.php
index 31334e159a..b8b85553c6 100644
--- a/pandora_console/operation/system_alert.php
+++ b/pandora_console/operation/system_alert.php
@@ -18,7 +18,7 @@ echo "</span>
 <img class='modalclosex cerrar' src='".$config['homeurl']."/images/icono_cerrar.png'>
 </div>";
 
-echo "<div style='overflow-y:scroll;height:550px;'>";
+echo "<div style='overflow-y:auto;height:400px;min-height:400px;max-height:400px;'>";
 echo get_pandora_error_for_header();
 echo "</div>";
 
@@ -32,7 +32,8 @@ echo "<div class='modalokbutton cerrar'>
 <script>
 
 $(".cerrar").click(function(){
-  $("#alert_messages").dialog('close');
+  $("#alert_messages").hide();
+  $( "#opacidad" ).remove();
 });
 
 </script>