.get("CurWorkD", Ci.nsILocalFile); 
.get("CurWorkD", Components.interfaces.nsILocalFile); 
function do_get_topsrcdir() {  try {    var lf = Components.classes["@mozilla.org/file/local;1"]                       .createInstance(Components.interfaces.nsILocalFile);    lf.initWithPath(environment["NATIVE_TOPSRCDIR"]);  } catch (e) {    // relative topsrcdir    lf = Components.classes["@mozilla.org/file/directory_service;1"]                   .getService(Components.interfaces.nsIProperties)                   .get("CurWorkD", Ci.nsILocalFile);    lf.appendRelativePath(environment["NATIVE_TOPSRCDIR"]);  }  return lf;}
5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5872/8b17798260dd4336d66374ea23d56d2cbf90453d/head.js/clean/tools/test-harness/xpcshell-simple/head.js