Jquery recursive visible

Posted: May 13, 2011 in PHP
jQuery.extend(
    jQuery.expr[ ":" ],
    { reallyvisible : function (a) {

return !(jQuery(a).is(":hidden") || jQuery(a).parents(":hidden").length || jQuery(a).css('display')=='none');

 }}

  );
  alert($('#billingFirstName').is(':reallyvisible'));
 
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