Another example

fb-resize.js

  $(window).bind("load resize", function(){    
  var container_width = $('#container').width();    
    $('#container').html('<div class="fb-like-box" ' + 
    'data-href="https://www.facebook.com/FacebookDevelopers"' +
    ' data-width="' + container_width + '" data-height="730" data-show-faces="false" ' +
    'data-stream="true" data-header="true"></div>');
    FB.XFBML.parse( );    
});