How to load an external website into a div of a html page

Using simple html,

   <div>

        <object type="text/html" data="http://validator.w3.org/" width="800px" height="600px"

            style="overflow: auto; border: 5px ridge blue">

        </object>

    </div>

Or JQuery,

<script>

     $("#siteloader")

            .html('<object data="http://your-website-domain"/>');

</script>