diff --git a/trunk/includes/js/LSdefault.js b/trunk/includes/js/LSdefault.js
index 0cb34ecc..a354c75a 100644
--- a/trunk/includes/js/LSdefault.js
+++ b/trunk/includes/js/LSdefault.js
@@ -57,10 +57,16 @@ var LSdefault = new Class({
       (function(){new Fx.Style(this.LSerror,'opacity',{duration:500}).start(0.8,0);}).delay(5000, this);
     },
 
-    loadingImgDisplay: function(el,position) {
+    loadingImgDisplay: function(el,position,size) {
       this.loading_img_id++;
       this.loading_img[this.loading_img_id] = new Element('img');
-      this.loading_img[this.loading_img_id].src='templates/images/ajax-loader.gif';
+      if (size=='big') {
+        var src = 'templates/images/loading.gif';
+      }
+      else {
+        var src = 'templates/images/ajax-loader.gif';
+      }
+      this.loading_img[this.loading_img_id].src=src;
       if (position=='inside') {
         this.loading_img[this.loading_img_id].injectInside(el);
       }
diff --git a/trunk/includes/js/LSsession_login.js b/trunk/includes/js/LSsession_login.js
index 02359d95..7c8ae58b 100644
--- a/trunk/includes/js/LSsession_login.js
+++ b/trunk/includes/js/LSsession_login.js
@@ -3,12 +3,26 @@ var LSsession_login = new Class({
       this.select_ldapserver = $('LSsession_ldapserver');
       if ( ! this.select_ldapserver ) 
         return;
+      this.loading_zone = $('loading_zone');
       this.select_ldapserver.addEvent('change',this.onLdapServerChanged.bind(this));
-			this.onLdapServerChanged();
+      this.onLdapServerChanged();
+    },
+
+    disableInput: function() {
+      $$('input').each(function(el) {
+        el.setProperty('disabled','1');
+      });
+    },
+
+    enableInput: function() {
+      $$('input').each(function(el) {
+        el.setProperty('disabled','');
+      });
     },
 
     onLdapServerChanged: function(){
-      var imgload = varLSdefault.loadingImgDisplay(this.select_ldapserver);
+      this.disableInput();
+      var imgload = varLSdefault.loadingImgDisplay(this.loading_zone,'inside','big');
       var server = this.select_ldapserver.value;
       var data = {
         template: 'login',
@@ -24,7 +38,7 @@ var LSsession_login = new Class({
       var data = Json.evaluate(responseText);
       LSdebug(data);
       if ( data ) {
-				if (data.LSdebug) {
+        if (data.LSdebug) {
           varLSdefault.displayDebug(data.LSdebug);
         }
         if (data.LSerror) {
@@ -38,6 +52,11 @@ var LSsession_login = new Class({
             el.setStyle('display','block');
           });
         }
+        else {
+          $$('.loginform-level').each(function(el) {
+            el.setStyle('display','none');
+          });
+        }
       }
       else {
         $$('.loginform-level').each(function(el) {
@@ -45,6 +64,7 @@ var LSsession_login = new Class({
         });
         $('LSsession_topDn').empty();
       }
+      this.enableInput();
     }
 });
 window.addEvent(window.ie ? 'load' : 'domready', function() {
diff --git a/trunk/templates/css/login.css b/trunk/templates/css/login.css
index ed29bb19..b8373749 100644
--- a/trunk/templates/css/login.css
+++ b/trunk/templates/css/login.css
@@ -1,50 +1,55 @@
 #loginform-logo {
-	float:									left;
+  float:                  left;
 }
 
 div.loginform {
-	margin: 								auto;
-	margin-top:							10%;
-	border:									1px solid #69c;
-	padding: 								1em;
-	width: 									30em;
-	background: 						transparent url(../images/login_fd.png) no-repeat scroll 98% 98%;
+  margin:                 auto;
+  margin-top:             10%;
+  border:                 1px solid #69c;
+  padding:                1em;
+  width:                  30em;
+  background:             transparent url(../images/login_fd.png) no-repeat scroll 98% 98%;
 }
 
 dl.loginform {
-	margin: 								0;
-	padding: 								0;
+  margin:                 0;
+  padding:                0;
 }
 
 .loginform dt {
-	position: 							relative;
-	left: 									0;
-	top: 										1.1em;
-	width: 									8em;
-	font-weight: 						bold;
-	font-size: 							0.9em;
+  position:               relative;
+  left:                   0;
+  top:                    1.1em;
+  width:                  8em;
+  font-weight:            bold;
+  font-size:              0.9em;
 }
 
 .loginform dd {
-	margin: 								0 0 0 9em;
-	padding: 								0 0 0em 0em;
+  margin:                 0 0 0 9em;
+  padding:                0 0 0em 0em;
 }
 
 .loginform-level{
-	display:								none;
+  display:                none;
 }
 
 .loginform-id {
-	visibility:							hidden;
+  visibility:             hidden;
 }
 
 .loginform input, .loginform select {
-	border:									1px inset #ccc;
-	width:									13em;
+  border:                 1px inset #ccc;
+  width:                  13em;
 }
 
 .loginform input[type='submit'] {
-	border:									1px outset #ccc;
-	width:									11em;
-	margin:									1em;
+  border:                 1px outset #ccc;
+  width:                  11em;
+  margin:                 1em;
+}
+
+#loading_zone {
+  float:                  right;
+  margin-left:            1em;
 }
diff --git a/trunk/templates/login.tpl b/trunk/templates/login.tpl
index 4a85c33f..85480292 100644
--- a/trunk/templates/login.tpl
+++ b/trunk/templates/login.tpl
@@ -1,35 +1,36 @@
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
  "http://www.w3.org/TR/html4/loose.dtd">
 <html>
-	<head>
-		<title>LdapSaisie{if $pagetitle != ''} - {$pagetitle}{/if}</title>
-		<link rel="stylesheet" type="text/css" href="templates/css/login.css" media="screen" title="Normal" />
-		{$LSsession_css}
-		{$LSsession_js}
-	</head>
+  <head>
+    <title>LdapSaisie{if $pagetitle != ''} - {$pagetitle}{/if}</title>
+    <link rel="stylesheet" type="text/css" href="templates/css/login.css" media="screen" title="Normal" />
+    {$LSsession_css}
+    {$LSsession_js}
+  </head>
 <body>
 <div id='LSerror'>
 {$LSerrors}
 </div>
 <div id='LSdebug'>
-	<a href='#' id='LSdebug_hidden'>X</a> 
-	<div id='LSdebug_infos'>{if $LSdebug != ''}{$LSdebug}{/if}</div>
+  <a href='#' id='LSdebug_hidden'>X</a> 
+  <div id='LSdebug_infos'>{if $LSdebug != ''}{$LSdebug}{/if}</div>
 </div>
 <div class='loginform'>
 <img src='templates/images/logo.png' alt='Logo' id='loginform_logo' />
+<div id='loading_zone'></div>
 <form action='{$loginform_action}' method='post'>
 <dl class='loginform'>
   <dt {$loginform_ldapserver_style}>{$loginform_label_ldapserver}</dt>
   <dd {$loginform_ldapserver_style}>
-		<select name='LSsession_ldapserver' id='LSsession_ldapserver'>{html_options values=$loginform_ldapservers_index output=$loginform_ldapservers_name selected=$ldapServerId}</select>
-	</dd>
+    <select name='LSsession_ldapserver' id='LSsession_ldapserver'>{html_options values=$loginform_ldapservers_index output=$loginform_ldapservers_name selected=$ldapServerId}</select>
+  </dd>
   <dt class='loginform-level' {$loginform_ldapserver_style}>{$loginform_label_level}</dt>
   <dd class='loginform-level' {$loginform_ldapserver_style}><select name='LSsession_topDn' id='LSsession_topDn'>{html_options values=$loginform_topdn_index output=$loginform_topdn_name selected=$topDn}</select></dd>
-	<dt>{$loginform_label_user}</dt>
-	<dd><input type='text' name='LSsession_user' /></dd>
-	<dt>{$loginform_label_pwd}</dt>
-	<dd><input type='password' name='LSsession_pwd' /></dd>
-	<dd><input type='submit' value='{$loginform_label_submit}' /></dd>
+  <dt>{$loginform_label_user}</dt>
+  <dd><input type='text' name='LSsession_user' /></dd>
+  <dt>{$loginform_label_pwd}</dt>
+  <dd><input type='password' name='LSsession_pwd' /></dd>
+  <dd><input type='submit' value='{$loginform_label_submit}' /></dd>
 </dl>
 </form>
 </div>