protected static String trimSpacesOnly(String s)
	{
		while(s.startsWith(" ")||s.startsWith("\t")||s.startsWith("\n")||s.startsWith("\r"))
			s=s.substring(1);
		while(s.endsWith(" ")||s.endsWith("\t")||s.endsWith("\n")||s.endsWith("\r"))
			s=s.substring(0,s.length()-1);
		return s;
	}