jquery dialog using iframe url

<div id="dialog">    <iframe id="myIframe" src=""></iframe></div><button id="dialogBtn">Open Dialog</button>And JS:$("#dialog").dialog({    autoOpen: false,    modal: true,    height: 600,    open: function(ev, ui){             $('#myIframe').attr('src','http://www.jQuery.com');          }});$('#dialogBtn').click(function(){    $('#dialog').dialog('open');});