rem: commandRow.stopOnThisCommand = undefined; 
add: delete commandRow.stopOnThisCommand; 
context:     return function() {        if (commandRow.stopOnThisCommand == undefined) {            commandRow.stopOnThisCommand = true;            commandRow.beforeBackgroundColor = Element.getStyle(commandRow, "backgroundColor");            Element.setStyle(commandRow, {"background-color" : "#cccccc"});        } else {            commandRow.stopOnThisCommand = undefined;            Element.setStyle(commandRow, {"background-color" : commandRow.beforeBackgroundColor});        }    }
meta: 3428	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3428/6b0b260c628dcdbf842d816728bb3bdcc6219faa/selenium-testrunner.js/buggy/code/javascript/core/scripts/selenium-testrunner.js