rem: var removeClasses = arguments; $R(1,arguments.length-1).each( function(index) { element.className = element.className.split(' ').reject( function(klass) { return (klass == removeClasses[index]) } ).join(' '); }); 
add: var regEx; for(var i = 1; i < arguments.length; i++) { regEx = new RegExp("(^|\\s)" + arguments[i] + "(\\s|$)", 'g'); element.className = element.className.replace(regEx, '') } 
context:     remove: function(element) {      element = $(element);      var removeClasses = arguments;      $R(1,arguments.length-1).each( function(index) {        element.className =           element.className.split(' ').reject(             function(klass) { return (klass == removeClasses[index]) } ).join(' ');      });    },
meta: 3991	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3991/57687341792749db94b850962ee7ed7f18e1087d/util.js/clean/manager/media/script/scriptaculous/util.js