diff --git a/addons/website/static/src/js/website.js b/addons/website/static/src/js/website.js
index 6e3ef66ab30..4f56cee63cc 100644
--- a/addons/website/static/src/js/website.js
+++ b/addons/website/static/src/js/website.js
@@ -380,6 +380,13 @@ dom_ready.then(function () {
         init_kanban(this);
     });
 
+    $('.js_website_submit_form').on('submit', function() {
+        var $buttons = $(this).find('button[type="submit"], a.a-submit');
+        _.each($buttons, function(btn) {
+            $(btn).attr('data-loading-text', '<i class="fa fa-spinner fa-spin"></i> ' + $(btn).text()).button('loading');
+        });
+    });
+
     setTimeout(function () {
         if (window.location.hash.indexOf("scrollTop=") > -1) {
             window.document.body.scrollTop = +location.hash.match(/scrollTop=([0-9]+)/)[1];
diff --git a/addons/website_blog/views/website_blog_templates.xml b/addons/website_blog/views/website_blog_templates.xml
index a2b13f31d92..0bfe17ee0b0 100644
--- a/addons/website_blog/views/website_blog_templates.xml
+++ b/addons/website_blog/views/website_blog_templates.xml
@@ -294,7 +294,7 @@
     </xpath>
     <xpath expr="//ul[@id='comments-list']" position="before">
         <section class="mb32 read_width css_editable_mode_hidden">
-            <form id="comment" t-attf-action="/blog/post_comment/#{blog_post.id}" method="POST">
+            <form id="comment" class="js_website_submit_form" t-attf-action="/blog/post_comment/#{blog_post.id}" method="POST">
                 <div class="media">
                     <span class="pull-left">
                         <img t-if="user_id.partner_id.image_small" class="img img-circle media-object" t-att-src="website.image_url(user_id.partner_id, 'image_small')" style="width: 30px"/>
diff --git a/addons/website_crm/views/website_crm.xml b/addons/website_crm/views/website_crm.xml
index 836832e668e..f27f68e84b1 100644
--- a/addons/website_crm/views/website_crm.xml
+++ b/addons/website_crm/views/website_crm.xml
@@ -4,7 +4,7 @@
 
 <template id="contactus_form" name="Contact Form" inherit_id="website.contactus" customize_show="True">
     <xpath expr="//div[@name='mail_button']" position="replace">
-        <form action="/crm/contactus" method="post" class="form-horizontal mt32" enctype="multipart/form-data">
+        <form action="/crm/contactus" method="post" class="form-horizontal mt32 js_website_submit_form" enctype="multipart/form-data">
             <div t-attf-class="form-group #{error and 'contact_name' in error and 'has-error' or ''}">
                 <label class="col-md-3 col-sm-4 control-label" for="contact_name">Your Name</label>
                 <div class="col-md-7 col-sm-8">
@@ -41,7 +41,7 @@
 
             <div class="form-group">
                 <div class="col-md-offset-3 col-sm-offset-4 col-sm-8 col-md-7">
-                    <button class="btn btn-primary btn-lg">Send</button>
+                    <button type="submit" class="btn btn-primary btn-lg">Send</button>
                 </div>
             </div>
         </form>
diff --git a/addons/website_event_track/views/website_event.xml b/addons/website_event_track/views/website_event.xml
index deff0d2d3f2..725e35f5e67 100644
--- a/addons/website_event_track/views/website_event.xml
+++ b/addons/website_event_track/views/website_event.xml
@@ -319,7 +319,7 @@
                         </section>
                     </div>
                     <section id="forms" t-if="event.show_track_proposal">
-                        <form class="form-horizontal mt32" t-attf-action="/event/#{event.id}/track_proposal/post" method="post" enctype="multipart/form-data">
+                        <form class="form-horizontal mt32 js_website_submit_form" t-attf-action="/event/#{event.id}/track_proposal/post" method="post" enctype="multipart/form-data">
                             <div class="form-group">
                                 <label class="col-md-3 col-sm-4 control-label" for="partner_name">Your Name</label>
                                 <div class="col-md-7 col-sm-8">
diff --git a/addons/website_forum/views/website_forum.xml b/addons/website_forum/views/website_forum.xml
index e228901aadf..f36e7c7e66d 100644
--- a/addons/website_forum/views/website_forum.xml
+++ b/addons/website_forum/views/website_forum.xml
@@ -429,7 +429,7 @@
             We keep a high level of quality in showcased posts, around 20% of the submited
             posts will be featured.
         </p>
-        <form t-att-action="action_url" method="post" role="form" class="tag_text form-horizontal">
+        <form t-att-action="action_url" method="post" role="form" class="tag_text form-horizontal js_website_submit_form">
             <input type="hidden" name="karma" t-attf-value="#{user.karma}" id="karma"/>
             <input type="hidden" name="karma_retag" t-attf-value="#{forum.karma_retag}" id="karma_retag"/>
             <div class="form-group">
@@ -455,7 +455,7 @@
             </div>
             <div class="form-group">
                 <div class="col-sm-offset-2 col-sm-8">
-                    <button t-attf-class="btn btn-primary #{forum.allow_share and 'oe_social_share_call' or ''} #{(user.karma &lt; forum.karma_ask) and 'karma_required' or ''}"
+                    <button type="submit" t-attf-class="btn btn-primary #{forum.allow_share and 'oe_social_share_call' or ''} #{(user.karma &lt; forum.karma_ask) and 'karma_required' or ''}"
                         t-att-data-karma="forum.karma_ask"
                         disabled="True" data-hashtags="#link" data-social-target-type="other">Post</button>
                 </div>
@@ -471,7 +471,7 @@
         <p>
             <b>Share</b> Something Awesome.
         </p>
-        <form t-attf-action="/forum/#{slug(forum)}/new?post_type=discussion" method="post" role="form" class="tag_text">
+        <form t-attf-action="/forum/#{slug(forum)}/new?post_type=discussion" method="post" role="form" class="tag_text js_website_submit_form">
             <input type="text" name="post_name" required="True" t-attf-value="#{post_name}"
                 class="form-control mb16" placeholder="Your Discussion Title..."/>
             <input type="hidden" name="karma" t-attf-value="#{user.karma}" id="karma"/>
@@ -483,7 +483,7 @@
             <input type="hidden" name="karma_retag" t-attf-value="#{forum.karma_retag}" id="karma_retag"/>
             <input type="text" name="post_tags" placeholder="Tags" class="form-control js_select2"/>
             <br/><br/>
-            <button t-attf-class="btn btn-primary #{forum.allow_share and 'oe_social_share_call' or ''} #{(user.karma &lt; forum.karma_ask) and 'karma_required' or ''}"
+            <button type="submit" t-attf-class="btn btn-primary #{forum.allow_share and 'oe_social_share_call' or ''} #{(user.karma &lt; forum.karma_ask) and 'karma_required' or ''}"
                 t-att-data-karma="forum.karma_ask"
                 data-hashtags="#discussion" data-social-target-type="default">Post Your Topic</button>
         </form>
@@ -508,7 +508,7 @@
             <li>Avoid unnecessary introductions (Hi,... Please... Thanks...),</li>
             <li>Provide enough details and, if possible, give an example.</li>
         </ul>
-        <form t-attf-action="/forum/#{slug(forum)}/new?post_type=question" method="post" role="form" class="tag_text">
+        <form t-attf-action="/forum/#{slug(forum)}/new?post_type=question" method="post" role="form" class="tag_text js_website_submit_form">
             <input type="text" name="post_name" required="True" pattern=".*\S.*" t-attf-value="#{post_name}"
                 class="form-control mb16" placeholder="Your Question Title..." title="Title must not be empty"/>
             <input type="hidden" name="karma" t-attf-value="#{user.karma}" id="karma"/>
@@ -521,7 +521,7 @@
             <input type="hidden" name="karma_retag" t-attf-value="#{forum.karma_retag}" id="karma_retag"/>
             <input type="hidden" name="post_tags" placeholder="Tags" class="form-control js_select2"/>
             <br/><br/>
-            <button t-attf-class="btn btn-primary #{forum.allow_share and 'oe_social_share_call' or ''} #{(user.karma &lt; forum.karma_ask) and 'karma_required' or ''}"
+            <button type="submit" t-attf-class="btn btn-primary #{forum.allow_share and 'oe_social_share_call' or ''} #{(user.karma &lt; forum.karma_ask) and 'karma_required' or ''}"
                 t-att-data-karma="forum.karma_ask"
                 data-hashtags="#question" data-social-target-type="question">Post Your Question</button>
         </form>
@@ -533,7 +533,7 @@
     <t t-call="website_forum.header">
         <h3 t-if="not is_answer">Edit <span t-field="post.post_type"/></h3>
         <h3 t-if="is_answer">Edit reply</h3>
-        <form t-attf-action="/forum/#{slug(forum)}/post/#{slug(post)}/save" method="post" role="form" class="tag_text">
+        <form t-attf-action="/forum/#{slug(forum)}/post/#{slug(post)}/save" method="post" role="form" class="tag_text js_website_submit_form">
             <div t-if="not is_answer">
                 <input type="text" name="post_name" required="True" pattern=".*\S.*" t-attf-value="#{post.name}"
                     class="form-control mb8" placeholder="Edit your Post" title="Title must not be empty"/>
@@ -551,7 +551,7 @@
                 <input type="text" name="post_tags" class="form-control col-md-9 js_select2" placeholder="Tags" t-attf-data-init-value="#{tags}" value="Tags"/>
                 <br/>
             </div>
-            <button class="btn btn-primary btn-lg">Save</button>
+            <button type="submit" class="btn btn-primary btn-lg">Save</button>
         </form>
     </t>
 </template>
@@ -565,7 +565,7 @@
             users having a high karma can see closed posts to moderate
             them.
         </p>
-        <form t-attf-action="/forum/#{ slug(forum) }/question/#{slug(question)}/close" method="post" role="form" class="form-horizontal mt32 mb64">
+        <form t-attf-action="/forum/#{ slug(forum) }/question/#{slug(question)}/close" method="post" role="form" class="form-horizontal mt32 mb64 js_website_submit_form">
             <input name="post_id" t-att-value="question.id" type="hidden"/>
             <div class="form-group">
                 <label class="col-md-3 control-label" for="reason">Post:</label>
@@ -585,7 +585,7 @@
             </div>
             <div class="form-group">
                 <div class="col-md-offset-3 col-md-8">
-                    <button class="btn btn-primary">Close post</button>
+                    <button type="submit" class="btn btn-primary">Close post</button>
                     <span class="text-muted">or</span>
                     <a class="btn btn-link" t-attf-href="/forum/#{ slug(forum) }/question/#{ slug(question) }">back to post</a>
                 </div>
@@ -597,13 +597,13 @@
 <!-- Edition: post a reply -->
 <template id="post_reply">
     <div class="css_editable_mode_hidden" groups="base.group_user">
-        <form t-attf-id="reply#{ object._name.replace('.','') + '-' + str(object.id) }" class="collapse"
+        <form t-attf-id="reply#{ object._name.replace('.','') + '-' + str(object.id) }" class="collapse js_website_submit_form"
             t-attf-action="/forum/#{ slug(forum) }/#{slug(object)}/reply" method="post" role="form">
             <h3 class="mt8">Your Reply</h3>
             <input type="hidden" name="karma" t-attf-value="#{user.karma}" id="karma"/>
             <textarea name="content" t-attf-id="content-#{str(object.id)}" class="form-control load_editor" required="True"
                 t-att-data-karma="forum.karma_editor"/>
-            <button class="btn btn-primary mb16">Post Comment</button>
+            <button type="submit" class="btn btn-primary mb16">Post Comment</button>
         </form>
     </div>
 </template>
@@ -618,11 +618,11 @@
         - no need to answer the same question twice. Also, please <b>don't forget to vote</b>
         - it really helps to select the best questions and answers!
     </p>
-    <form t-attf-action="/forum/#{ slug(forum) }/#{slug(question)}/reply" method="post" role="form">
+    <form t-attf-action="/forum/#{ slug(forum) }/#{slug(question)}/reply" method="post" class="js_website_submit_form" role="form">
         <input type="hidden" name="karma" t-attf-value="#{user.karma}" id="karma"/>
         <textarea name="content" t-attf-id="content-#{str(question.id)}" class="form-control load_editor" required="True"
                 t-att-data-karma="forum.karma_editor"/>
-        <button t-attf-class="btn btn-primary #{forum.allow_share and 'oe_social_share_call' or ''} mt16 #{not question.can_answer and 'karma_required' or ''}"
+        <button type="submit" t-attf-class="btn btn-primary #{forum.allow_share and 'oe_social_share_call' or ''} mt16 #{not question.can_answer and 'karma_required' or ''}"
                 t-att-data-karma="question.forum_id.karma_answer"
                 data-social-target-type="answer" data-hashtags="#answer">Post Answer</button>
     </form>
@@ -923,7 +923,7 @@
                 </small>
             </div>
             <div class="css_editable_mode_hidden">
-                <form t-attf-id="comment#{ object._name.replace('.','') + '-' + str(object.id) }" class="collapse oe_comment_grey"
+                <form t-attf-id="comment#{ object._name.replace('.','') + '-' + str(object.id) }" class="collapse oe_comment_grey js_website_submit_form"
                         t-attf-action="/forum/#{slug(forum)}/post/#{slug(object)}/comment" method="POST">
                     <input name="post_id" t-att-value="object.id" type="hidden" class="mt8"/>
                     <textarea name="comment" class="form-control" placeholder="Comment this post..."/>
@@ -1077,7 +1077,7 @@
                 <img class="img img-responsive img-circle" t-attf-src="/forum/user/#{user.id}/avatar"/>
             </div>
             <div class="col-md-10">
-            <form t-attf-action="/forum/#{slug(forum)}/user/#{slug(user)}/save" method="post" role="form" class="form-horizontal">
+            <form t-attf-action="/forum/#{slug(forum)}/user/#{slug(user)}/save" method="post" role="form" class="form-horizontal js_website_submit_form">
                 <input name="user_id" t-att-value="user.id" type="hidden"/>
                 <div class="form-group">
                     <label class="col-md-2 control-label mb16" for="user_name">Real name</label>
@@ -1134,7 +1134,7 @@
                     </div>
                 </div>
                 <div class="col-sm-offset-2 col-md-2 mb16">
-                    <button class="btn btn-primary btn-lg">Update</button>
+                    <button type="submit" class="btn btn-primary btn-lg">Update</button>
                 </div>
             </form>
             </div>
diff --git a/addons/website_hr_recruitment/views/templates.xml b/addons/website_hr_recruitment/views/templates.xml
index bc773a2dbeb..f8df63cef5c 100644
--- a/addons/website_hr_recruitment/views/templates.xml
+++ b/addons/website_hr_recruitment/views/templates.xml
@@ -152,7 +152,7 @@
                 <div class="row">
                     <section id="forms">
                         <!-- TODO Multilingual form action support ? -->
-                        <form class="form-horizontal mt32" action="/jobs/thankyou" method="post" enctype="multipart/form-data">
+                        <form class="form-horizontal mt32 js_website_submit_form" action="/jobs/thankyou" method="post" enctype="multipart/form-data">
                             <input type="hidden" t-att-value="job and job.department_id.id or False" name="department_id"/>
                             <input type="hidden" t-att-value="job and job.id or False" name="job_id"/>
                             <div t-attf-class="form-group #{error.get('partner_name') and 'has-error' or ''}">
diff --git a/addons/website_quote/views/website_quotation.xml b/addons/website_quote/views/website_quotation.xml
index 8d663dcf775..56507c2e49a 100644
--- a/addons/website_quote/views/website_quotation.xml
+++ b/addons/website_quote/views/website_quotation.xml
@@ -205,7 +205,7 @@
                       <!-- modal relative to the actions Accept/Reject/Cancel -->
                       <div class="modal fade" id="modalaccept" role="dialog" aria-hidden="true">
                         <div class="modal-dialog">
-                          <form id="accept" method="POST" t-attf-action="/quote/accept/#{quotation.id}/?token=#{quotation.access_token}" class="js_accept_json modal-content">
+                          <form id="accept" method="POST" t-attf-action="/quote/accept/#{quotation.id}/?token=#{quotation.access_token}" class="js_accept_json modal-content js_website_submit_form">
                             <div class="modal-header">
                               <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&amp;times;</button>
                               <h4 class="modal-title">Validate Order</h4>
@@ -281,7 +281,7 @@
               <h1 class="page-header">History</h1>
               <!-- Options:Quotation Chatter: user can reply -->
               <section class="mb32 css_editable_mode_hidden hidden-print">
-                  <form id="comment" t-attf-action="/quote/#{quotation.id}/#{quotation.access_token}/post" method="POST">
+                  <form id="comment" class="js_website_submit_form" t-attf-action="/quote/#{quotation.id}/#{quotation.access_token}/post" method="POST">
                       <img class="img pull-left img-rounded" t-att-src="website.image_url(user_id.partner_id, 'image_small')" style="width: 50px; margin-right: 10px;"/>
                       <div class="pull-left mb32" style="width: 75%%">
                           <textarea rows="4" name="comment" class="form-control" placeholder="Send us a note..."></textarea>
diff --git a/addons/website_sale/views/templates.xml b/addons/website_sale/views/templates.xml
index d6d8a346c64..4717cd19d92 100644
--- a/addons/website_sale/views/templates.xml
+++ b/addons/website_sale/views/templates.xml
@@ -594,7 +594,7 @@
                     </li>
                 </ul>
                 <div class="css_editable_mode_hidden">
-                    <form id="comment" t-attf-action="/shop/product/comment/#{product.id}" method="POST">
+                    <form id="comment" class="js_website_submit_form" t-attf-action="/shop/product/comment/#{product.id}" method="POST">
                         <img class="img pull-left img-rounded" t-att-src="website.image_url(user_id.partner_id, 'image_small')" style="width: 50px; margin-right: 10px;"/>
                         <div class="pull-left mb32" style="width: 75%%">
                             <textarea rows="3" name="comment" class="form-control" placeholder="Write a comment..."></textarea>
diff --git a/addons/website_slides/view/website_slides.xml b/addons/website_slides/view/website_slides.xml
index 9f015c0f510..4df31e4acd1 100644
--- a/addons/website_slides/view/website_slides.xml
+++ b/addons/website_slides/view/website_slides.xml
@@ -543,7 +543,7 @@
                                     </h4>
                                 </div>
                                 <div t-att-class="comments and 'tab-pane fade active in' or 'tab-pane fade'" id="discuss">
-                                    <form id="comment" t-attf-action="/slides/slide/#{slide.id}/comment" method="POST">
+                                    <form id="comment" class="js_website_submit_form" t-attf-action="/slides/slide/#{slide.id}/comment" method="POST">
                                         <div class="media">
                                             <span class="pull-left">
                                                 <img class="img img-circle media-object"