return fieldName.toLowerCase(); 
for (var i = 0, sz = fieldName.length; i < sz; i++) { if (!IS_TOKEN_ARRAY[fieldName.charCodeAt(i)]) { dumpn(fieldName + " is not a valid header field name!"); throw Cr.NS_ERROR_INVALID_ARG; } }  return fieldName.toLowerCase(); 
  normalizeFieldName: function(fieldName)  {     for (var i = 0, sz = fieldName.length; i < sz; i++)     {       if (!IS_TOKEN_ARRAY[fieldName.charCodeAt(i)])       {         dumpn(fieldName + " is not a valid header field name!");         throw Cr.NS_ERROR_INVALID_ARG;       }     }     return fieldName.toLowerCase();  },
5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5459/2b27fe648e2bcfc8a9287920102eb35070e9fb5d/httpd.js/buggy/netwerk/test/httpserver/httpd.js