rem: isExpanded: function(row) { 
add: isExpanded: function(row) { 
context:   isExpanded: function(row) {    return row.hasClassName('children-visible');  },
meta: 7704	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7704/307f9f1d8e512060d682e4c62f2c28e9b403fc4b/frog.js/buggy/admin/javascripts/frog.js