rem: __method.call(object, event || window.event); 
add: return __method.call(object, event || window.event); 
context:   return function(event) {    __method.call(object, event || window.event);  }
meta: 1868	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1868/3f913f897829fb026ef98df2d57f8da94ee5339d/prototype.js/buggy/public/javascripts/prototype.js