anchor.diff:              &lt;video preload="metadata" poster="<%=video_url(document, :format => :png, :style => '170x127#')%>"&gt;&lt;source src="<%= video_url(document, :format => :webm) %>" type="video/webm"&gt;&lt;source src="<%= video_url(document, :format => :mp4) %>" type="video/mp4"&gt;&lt;source src="<%= video_url(document, :format => :flv) %>" type="video/x-flv"&gt;&lt;p&gt;Your browser does not support HTML5 video.&lt;/p&gt;&lt;/video&gt;
             </textarea>
   
  -          <button class="btn " id="btn_copy_embed" href="#" data-toggle="tooltip" data-placement="right" title="<%=t('copy_to_clip')%>">
  +          <button class="btn" id="btn_copy_embed" href="#" data-toggle="tooltip" data-placement="right" title="<%=t('copy_to_clip')%>">
   
               <i class="icon-copy large"></i>
             </button>
  
positive.code:                 afterCopy: function(){}
                });
  
                $("#textarea_for_iframe").mouseup(function(e){
                  // fixes safari/chrome problem
                  e.preventDefault();
                }).focus(function(e){
  
negative.code: <%if document.class==Video || document.class==Audio%>
    <%=javascript_include_tag "jquery.zclip.min" %>
    <script type="text/javascript">
      $(document).ready(function(){
  