A jQuery method plugin that performs class name replacement.

jquery.replaceclass.js

/**
 * jQuery method plugin replaceClass()
 *
 * Replace a class name with another within a selection.
 *
 */
(function ($) {
  // Add a method to the jQuery fn object. 
  $.fn['replaceClass'] = function(needle, replacement) { 
    return this
      .filter(function() { return $(this).hasClass(needle); })
      .each(function() {
        $(this).removeClass(needle)
               .addClass(replacement);
			}); 
  };
}(jQuery));