rem: return elements.select(selector.match.bind(selector)).collect(Element.extend); 
add: return elements.select(selector.match.bind(selector)).map(Element.extend); 
context:   matchElements: function(elements, expression) {    var selector = new Selector(expression);    return elements.select(selector.match.bind(selector)).collect(Element.extend);  },
meta: 3158	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/3158/53dfa93e53bccf5af1729cbdce88cb70e1ffcca5/prototype.js/clean/public/javascripts/prototype.js