The caption code we use in our CSS. Authored by Erik Runyon.

image captions

$(window).load(function() {
  $('.image-right img,.image-left img,.image-default img').each(function(i,e){
    var $this = $(this), /*1*/
    $parent = $this.parent('p'); /*2*/
    if($parent.text().trim().length > 0) {  /*3*/
      $parent.addClass('captioned').css({ width: $this.outerWidth() }); /*4*/
    }
  });
});