rem: var body = document.getElementsByTagName("body")[0]; 
context: TestRunner.runTests = function (/*url...*/) {    if (TestRunner.logEnabled)        TestRunner.logger.log("SimpleTest START");      var body = document.getElementsByTagName("body")[0];    TestRunner._urls = flattenArguments(arguments);    $('testframe').src="";    TestRunner.runNextTest();};
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