Error: missing ] after element list Source File: javascript:%20[object%20XULElement] Line: 1, Column: 9 Source Code: [object XULElement]

Question

Can you help me out in letting me know what this means and how I can fix this? I found it in my tools menu under error console. It was listed as a warning, but then there was a option to highlight and evaluate the original warning message that was listed as
Warning: Expected color but found 'null'. Error in parsing value for 'background-color'. Declaration dropped.
Source File: http://www.msn.com/
When I cut and pasted message in the code evaluate box and pressed enter the warring message became an error then stated:
Error: missing ; before statement
Source File: javascript:%20Warning:%20Expected%20color%20but%20found%20'null'.%20%20Error%20in%20parsing%20value%20for%20'background-color'.%20%20Declaration%20dropped.%20Source%20File:%20http://www.msn.com/%20Line:%200
Line: 1, Column: 10
Source Code:
Warning: Expected color but found 'null'. Error in parsing value for 'background-color'. Declaration dropped. Source File: http://www.msn.com/ Line: 0
I am writing to ask for guidance on what to do and how to fix this.
I current have Firefox as my default browser. I have IE 9 and Windows 7 home ed on my HP lap top that has AOL preloaded into it as the mail provider. I am a beginner user and when I got the computer my cousin set up Mozilla and Firefox as a search browser and I like it.
I also have norton security

Answer 1

I think, the problem is with the order (in configuration file) of path to search headers:
     /opt/oracle/product/10g/10.2.0/precomp/admin/pcscfg.cfg
          sys_include=(/usr/include,/opt/freeware/lib/gcc/powerpc-ibm-aix6.1.0.0/4.2.0/include)
          include
          include=(/usr/include)
          include=(/opt/freeware/lib/gcc/powerpc-ibm-aix6.1.0.0/4.2.0/include)
In the filesys:
     ./usr/include/sys:
     -r--r--r-- 1 bin bin 17786 Aug 13 2007 types.h
     ./opt/freeware/lib/gcc/powerpc-ibm-aix6.1.0.0/4.2.0/include/sys:
     -rw-r--r-- 1 root system 18288 Mar 22 2008 types.h
     mode_t came from:
     #include <sys/types.h>
sys/types.h:
     * POSIX Extensions
     typedef unsigned int uint_t;
     typedef unsigned long ulong_t;
     * POSIX and XOPEN Declarations
     #if defined(_LP64) || defined(_I32LPx)
     typedef uint_t mode_t; /* file attribute type */
     #else
     typedef ulong_t mode_t; /* (historical version) */
     #endif