thingspeak/app/views/charts/_display.html.erb

  <br class="CL" />

  <iframe id="iframe<%= index %>" width="<%= width %>" height="<%= height %>" style="border: 1px solid #cccccc;" src="" default_src="<%= src %>"></iframe>

  <br><br>

  <%= t(:chart_embed_code) %>:
  <br>
  <textarea id="embed<%= index %>" rows="5" cols="53">&lt;iframe width="<%= width %>" height="<%= height %>" style="border: 1px solid #cccccc;" src="<%= src %>">&lt;/iframe></textarea>

<br><br><br>