rem: K: function(x) {return x} 
add: K: function(x) { return x } 
context:   K: function(x) {return x}
meta: 3684	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3684/55c6c64da0fbbfba74a0b4ad68022bf640a0a049/prototype.js/clean/actionpack/lib/action_view/helpers/javascripts/prototype.js