diff --git a/jm2l/templates/Public/Programme.mako b/jm2l/templates/Public/Programme.mako
index 20df865..e88f0e0 100644
--- a/jm2l/templates/Public/Programme.mako
+++ b/jm2l/templates/Public/Programme.mako
@@ -99,7 +99,7 @@ if Counter==0:
 ##        <div id="collapseEvent${num}" class="accordion-body collapse">
 ##            <div class="accordion-inner">
 
-    <table width="100%" class="table table-striped table-bordered table-hover">
+    <table class="table table-striped table-bordered table-hover">
       <thead>
         <tr>
             <th style="width:7em;text-align:center;">Date</th>
diff --git a/jm2l/templates/edit_event.mako b/jm2l/templates/edit_event.mako
index ef5d1d0..1609e51 100644
--- a/jm2l/templates/edit_event.mako
+++ b/jm2l/templates/edit_event.mako
@@ -80,9 +80,9 @@ DicForm = {
 
     ${helpers.DisplayForm(form, DicForm)}
     <br>
-    <center>
+    <div class="center">
         <button class="btn btn-large btn-primary" type="submit">Proposer</button>
-    </center>
+    </div>
     </form>
     
 </fieldset>
diff --git a/jm2l/templates/edit_tiers.mako b/jm2l/templates/edit_tiers.mako
index 5da789d..2a4bcc9 100644
--- a/jm2l/templates/edit_tiers.mako
+++ b/jm2l/templates/edit_tiers.mako
@@ -201,7 +201,7 @@ DicForm = {
 % endif
 
 <br>
-<center>
+  <div class="center">
     <button type="submit" class="btn btn-large btn-primary" />
 % if 'uid' in form._fields:
         <i class="icon-ok icon-white"></i> Mettre &agrave; jour
@@ -209,7 +209,7 @@ DicForm = {
         <i class="icon-ok icon-white"></i> Proposer
     </button>
 % endif
-</center>
+  </div>
 
 </form>
     % if 'uid' in form._fields:
diff --git a/jm2l/templates/helpers.mako b/jm2l/templates/helpers.mako
index cbe348d..7261ce6 100644
--- a/jm2l/templates/helpers.mako
+++ b/jm2l/templates/helpers.mako
@@ -207,7 +207,7 @@ TabJs = {'select':[], 'desc':[]}
     <li class="span2">
         <div class="media">
             <a class="pull-left" href="${filelink}">
-                <img class="media-object" src="${thumb}" />
+                <img class="media-object" src="${thumb}" alt="Fichier media" />
             </a>
         </div>
     </li>
@@ -291,7 +291,7 @@ TabJs = {'select':[], 'desc':[]}
         <td style="width: 80px;">
             <span class="preview">
                 {% if (file.thumbnailUrl) { %}
-                    <a href="{%=file.url%}" title="{%=file.name%}" download="{%=file.name%}" data-gallery><img src="{%=file.thumbnailUrl%}"></a>
+                    <a href="{%=file.url%}" title="{%=file.name%}" download="{%=file.name%}" data-gallery><img src="{%=file.thumbnailUrl%}" alt="{%=file.name%}"></a>
                 {% } %}
             </span>
         </td>
@@ -345,7 +345,7 @@ TabJs = {'select':[], 'desc':[]}
 % if len(ListEvent)==0:
     <tr>
         <td style="text-align:center;" colspan="2">
-            % if NotFoundTitle:
+            % if NotFoundTitle: 
                 <i>${NotFoundTitle}</i>
             % else:
                 <i>Désolé, Il n'y a rien dans l'historique.</i>
@@ -415,9 +415,9 @@ TabJs = {'select':[], 'desc':[]}
         <div class="media">
             <a class="pull-left" href="/entity/${Entity.entity_type}/${tiers.slug}">
                 % if tiers.ThumbLinks:
-                    <img class="media-object" src="${tiers.ThumbLinks.pop()}" />
+                    <img class="media-object" src="${tiers.ThumbLinks.pop()}" alt="${tiers.slug}" />
                 % else:
-                    <img class="media-object" src="/img/no-image-thumb.jpg"  />
+                    <img class="media-object" src="/img/no-image-thumb.jpg" alt="no-image" />
                 % endif
             </a>
             <div class="media-body">
@@ -539,10 +539,8 @@ TabJs = {'select':[], 'desc':[]}
             % endfor
         % else:
             <div class="active item" id="UserPic0">
-                <div style="margin:auto;width:170px;">
-                    <center>
+                <div class="center" style="margin:auto;width:170px;">
                         <img src="/img/no-image.jpg" class="img-polaroid" alt="Photo ${SallePhy.name}" style="max-height:130px;"  />
-                    <center>
                 </div>
             </div>
         % endif
@@ -655,13 +653,14 @@ TabJs = {'select':[], 'desc':[]}
           <th colspan="3">Sponsors ${Year}</th>
         </tr>
       </thead>
-        <tr>
         <% num = -1 %>
         % for entity in request.sponsors(Year):
             % for thumb in entity.ThumbLinks:
                 <% num+=1 %>
-                % if (num%3==0):
-                    </tr><tr>
+                % if (num==0):
+        <tr>
+                % elif (num%3==0):
+        </tr><tr>
                 % endif
                 <td>
                     <a href="/entity/${entity.get_entity_type.entity_type}/${entity.slug}">
@@ -679,13 +678,14 @@ TabJs = {'select':[], 'desc':[]}
           <th colspan="3">Exposants ${Year}</th>
         </tr>
       </thead>
-        <tr>
         <% num = -1 %>
         % for entity in request.exposants(Year):
             % for thumb in entity.ThumbLinks:
                 <% num+=1 %>
-                % if (num%3==0):
-                    </tr><tr>
+                % if (num==0):
+        <tr>
+                % elif (num%3==0):
+        </tr><tr>
                 % endif
                 <td>
                     <a href="/entity/${entity.get_entity_type.entity_type}/${entity.slug}">