diff --git a/app/assets/stylesheets/design/custom.scss b/app/assets/stylesheets/design/custom.scss
index 41df6aff6..d1d359adf 100644
--- a/app/assets/stylesheets/design/custom.scss
+++ b/app/assets/stylesheets/design/custom.scss
@@ -1102,7 +1102,9 @@ div#advisory_search_block div.continue_input {
 }
 
 form.mass_build section.left {
-  margin-left: 50px;
+  margin-left: 10px;
+  width: 350px;
+  margin-top: 15px;
 }
 
 form.mass_build section.right {
diff --git a/app/controllers/platforms/repositories_controller.rb b/app/controllers/platforms/repositories_controller.rb
index fcb064849..059a45a53 100644
--- a/app/controllers/platforms/repositories_controller.rb
+++ b/app/controllers/platforms/repositories_controller.rb
@@ -112,25 +112,29 @@ class Platforms::RepositoriesController < Platforms::BaseController
     sort_dir = params[:sSortDir_0]=="asc" ? 'asc' : 'desc'
     order = "#{colName[sort_col.to_i]} #{sort_dir}"
 
-    if params[:added] == "true"
-      @projects = @repository.projects
+    if params[:text] == 'true'
+      render :text => @repository.projects.map(&:name).join("\n")
     else
-      @projects = Project.joins(owner_subquery).addable_to_repository(@repository.id)
-      @projects = @projects.by_visibilities('open') if @repository.platform.platform_type == 'main'
-    end
-    @projects = @projects.paginate(
-      :page => (params[:iDisplayStart].to_i/(params[:iDisplayLength].present? ? params[:iDisplayLength] : 25).to_i).to_i + 1,
-      :per_page => params[:iDisplayLength].present? ? params[:iDisplayLength] : 25
-    )
+      if params[:added] == "true"
+        @projects = @repository.projects
+      else
+        @projects = Project.joins(owner_subquery).addable_to_repository(@repository.id)
+        @projects = @projects.by_visibilities('open') if @repository.platform.platform_type == 'main'
+      end
+      @projects = @projects.paginate(
+        :page => (params[:iDisplayStart].to_i/(params[:iDisplayLength].present? ? params[:iDisplayLength] : 25).to_i).to_i + 1,
+        :per_page => params[:iDisplayLength].present? ? params[:iDisplayLength] : 25
+      )
 
-    @total_projects = @projects.count
-    @projects = @projects.search(params[:sSearch]).search_order if params[:sSearch].present?
-    @projects = @projects.order(order)
+      @total_projects = @projects.count
+      @projects = @projects.search(params[:sSearch]).search_order if params[:sSearch].present?
+      @projects = @projects.order(order)
 
-    respond_to do |format|
-      format.json {
-        render :partial => (params[:added] == "true") ? 'project' : 'proj_ajax', :layout => false
-      }
+      respond_to do |format|
+        format.json {
+          render :partial => (params[:added] == "true") ? 'project' : 'proj_ajax', :layout => false
+        }
+      end
     end
   end
 
diff --git a/app/views/platforms/mass_builds/_repos_or_list_choice.html.haml b/app/views/platforms/mass_builds/_repos_or_list_choice.html.haml
new file mode 100644
index 000000000..37662b8c0
--- /dev/null
+++ b/app/views/platforms/mass_builds/_repos_or_list_choice.html.haml
@@ -0,0 +1,48 @@
+#repos_or_list.accordion
+  .accordion-group
+    .accordion-heading
+      %a.accordion-toggle{"data-parent" => "#repos_or_list", "data-toggle" => "collapse", :href => "#collapseRepos"}
+        =t("layout.mass_builds.repositories")
+    #collapseRepos.accordion-body.collapse.in
+      .accordion-inner
+        -@platform.repositories.each do |rep|
+          .both
+            =check_box_tag "repositories[]", rep.id, (params[:repositories]||[]).include?(rep.id.to_s), :id => "repositories_#{rep.id}", :href => "#{projects_list_platform_repository_path(@platform, rep)}?text=true"
+            =label_tag "repositories_#{rep.id}", rep.name
+  .accordion-group
+    .accordion-heading
+      %a.accordion-toggle{"data-parent" => "#repos_or_list", "data-toggle" => "collapse", :href => "#collapseList"}
+        =t("layout.mass_builds.projects_list")
+    #collapseList.accordion-body.collapse
+      .accordion-inner
+        =text_area_tag :projects_list, nil, :style => 'min-width:315px;'
+:javascript
+  $(document).ready(function() {
+    var projects_list = $('.form.mass_build #projects_list');
+    var repositories = $(".form.mass_build #collapseRepos input:checkbox");
+    repositories.click(function(){
+      if (this.checked){
+        $(this).attr('disabled',true);
+        $.ajax({
+          type: 'GET',
+          url: $(this).attr('href'),
+          success: function(data){
+                     var text = projects_list.val();
+                     if(text.length > 0 && text.slice(-1) != '\n') {text = text + "\n"}
+                     projects_list.val(text+data);
+                   },
+          error: function(data){
+                   alert('Error :(') // TODO remove
+                 }
+        });
+      }
+      return true;
+    });
+
+    projects_list.keyup(function(){
+      if($(this).val().length == 0) {
+        repositories.attr('disabled',false)
+                    .attr('checked', false);
+      }
+    });
+  });
diff --git a/app/views/platforms/mass_builds/index.html.haml b/app/views/platforms/mass_builds/index.html.haml
index 4967c095d..7cd1eb021 100644
--- a/app/views/platforms/mass_builds/index.html.haml
+++ b/app/views/platforms/mass_builds/index.html.haml
@@ -3,13 +3,7 @@
 
 = form_for :build, :url => platform_mass_builds_path(@platform), :html => { :class => 'form mass_build', :method => :post } do |f|
   %section.left
-    %h3= t("layout.mass_builds.repositories")
-    - @platform.repositories.each do |rep|
-      .both
-        = check_box_tag "repositories[]", rep.id, (params[:repositories]||[]).include?(rep.id.to_s), :id => "repositories_#{rep.id}"
-        = label_tag "repositories_#{rep.id}", rep.name
-    %h3= t("layout.mass_builds.projects_list")
-    = text_area_tag :projects_list, nil
+    =render 'repos_or_list_choice'
     %br
     = f.submit t("layout.projects.build_button")
   %section.right
diff --git a/vendor/assets/javascripts/bootstrap-collapse.js b/vendor/assets/javascripts/bootstrap-collapse.js
new file mode 100644
index 000000000..2b0a2baad
--- /dev/null
+++ b/vendor/assets/javascripts/bootstrap-collapse.js
@@ -0,0 +1,156 @@
+/* =============================================================
+ * bootstrap-collapse.js v2.2.1
+ * http://twitter.github.com/bootstrap/javascript.html#collapse
+ * =============================================================
+ * Copyright 2012 Twitter, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============================================================ */
+
+
+!function ($) {
+
+  "use strict"; // jshint ;_;
+
+
+ /* COLLAPSE PUBLIC CLASS DEFINITION
+  * ================================ */
+
+  var Collapse = function (element, options) {
+    this.$element = $(element)
+    this.options = $.extend({}, $.fn.collapse.defaults, options)
+
+    if (this.options.parent) {
+      this.$parent = $(this.options.parent)
+    }
+
+    this.options.toggle && this.toggle()
+  }
+
+  Collapse.prototype = {
+
+    constructor: Collapse
+
+  , dimension: function () {
+      var hasWidth = this.$element.hasClass('width')
+      return hasWidth ? 'width' : 'height'
+    }
+
+  , show: function () {
+      var dimension
+        , scroll
+        , actives
+        , hasData
+
+      if (this.transitioning) return
+
+      dimension = this.dimension()
+      scroll = $.camelCase(['scroll', dimension].join('-'))
+      actives = this.$parent && this.$parent.find('> .accordion-group > .in')
+
+      if (actives && actives.length) {
+        hasData = actives.data('collapse')
+        if (hasData && hasData.transitioning) return
+        actives.collapse('hide')
+        hasData || actives.data('collapse', null)
+      }
+
+      this.$element[dimension](0)
+      this.transition('addClass', $.Event('show'), 'shown')
+      $.support.transition && this.$element[dimension](this.$element[0][scroll])
+    }
+
+  , hide: function () {
+      var dimension
+      if (this.transitioning) return
+      dimension = this.dimension()
+      this.reset(this.$element[dimension]())
+      this.transition('removeClass', $.Event('hide'), 'hidden')
+      this.$element[dimension](0)
+    }
+
+  , reset: function (size) {
+      var dimension = this.dimension()
+
+      this.$element
+        .removeClass('collapse')
+        [dimension](size || 'auto')
+        [0].offsetWidth
+
+      this.$element[size !== null ? 'addClass' : 'removeClass']('collapse')
+
+      return this
+    }
+
+  , transition: function (method, startEvent, completeEvent) {
+      var that = this
+        , complete = function () {
+            if (startEvent.type == 'show') that.reset()
+            that.transitioning = 0
+            that.$element.trigger(completeEvent)
+          }
+
+      this.$element.trigger(startEvent)
+
+      if (startEvent.isDefaultPrevented()) return
+
+      this.transitioning = 1
+
+      this.$element[method]('in')
+
+      $.support.transition && this.$element.hasClass('collapse') ?
+        this.$element.one($.support.transition.end, complete) :
+        complete()
+    }
+
+  , toggle: function () {
+      this[this.$element.hasClass('in') ? 'hide' : 'show']()
+    }
+
+  }
+
+
+ /* COLLAPSIBLE PLUGIN DEFINITION
+  * ============================== */
+
+  $.fn.collapse = function (option) {
+    return this.each(function () {
+      var $this = $(this)
+        , data = $this.data('collapse')
+        , options = typeof option == 'object' && option
+      if (!data) $this.data('collapse', (data = new Collapse(this, options)))
+      if (typeof option == 'string') data[option]()
+    })
+  }
+
+  $.fn.collapse.defaults = {
+    toggle: true
+  }
+
+  $.fn.collapse.Constructor = Collapse
+
+
+ /* COLLAPSIBLE DATA-API
+  * ==================== */
+
+  $(document).on('click.collapse.data-api', '[data-toggle=collapse]', function (e) {
+    var $this = $(this), href
+      , target = $this.attr('data-target')
+        || e.preventDefault()
+        || (href = $this.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '') //strip for ie7
+      , option = $(target).data('collapse') ? 'toggle' : $this.data()
+    $this[$(target).hasClass('in') ? 'addClass' : 'removeClass']('collapsed')
+    $(target).collapse(option)
+  })
+
+}(window.jQuery);
\ No newline at end of file
diff --git a/vendor/assets/javascripts/vendor.js b/vendor/assets/javascripts/vendor.js
index 08fc17f77..2d5b2170d 100644
--- a/vendor/assets/javascripts/vendor.js
+++ b/vendor/assets/javascripts/vendor.js
@@ -15,6 +15,7 @@
 // require bootstrap-popover
 //= require bootstrap-alert
 //= require bootstrap-tab
+//= require bootstrap-collapse
 //= require chosen.jquery
 // require html5shiv
 // require_tree .
diff --git a/vendor/assets/stylesheets/bootstrap.css b/vendor/assets/stylesheets/bootstrap.css
index f5b1a58bc..6478473d8 100644
--- a/vendor/assets/stylesheets/bootstrap.css
+++ b/vendor/assets/stylesheets/bootstrap.css
@@ -815,4 +815,39 @@ a.badge:hover {
 .badge-inverse[href] {
   background-color: #1a1a1a;
 }
-
+.accordion {
+  margin-bottom: 20px;
+}
+.accordion-group {
+  margin-bottom: 2px;
+  border: 1px solid #e5e5e5;
+  -webkit-border-radius: 4px;
+  -moz-border-radius: 4px;
+  border-radius: 4px;
+}
+.accordion-heading {
+  border-bottom: 0;
+}
+.accordion-heading .accordion-toggle {
+  display: block;
+  padding: 8px 15px;
+}
+.accordion-toggle {
+  cursor: pointer;
+}
+.accordion-inner {
+  padding: 9px 15px;
+  border-top: 1px solid #e5e5e5;
+}
+.collapse {
+  position: relative;
+  height: 0;
+  overflow: hidden;
+  -webkit-transition: height 0.35s ease;
+  -moz-transition: height 0.35s ease;
+  -o-transition: height 0.35s ease;
+  transition: height 0.35s ease;
+}
+.collapse.in {
+  height: auto;
+}