function trim(sString)
{
	sTrimmedString = "";

	if (sString != "")
	{
		var iStart = 0;
		var iEnd = sString.length - 1;
		var sWhitespace = " \t\f\n\r";

		while (sWhitespace.indexOf(sString.charAt(iStart)) != -1)
		{
			iStart++;

			if (iStart > iEnd)
			{
				break;
			}
		}

		if (iStart <= iEnd)
		{
			while (sWhitespace.indexOf(sString.charAt(iEnd)) != -1)
			{
				iEnd--;
			}

			sTrimmedString = sString.substring(iStart,++iEnd);
		}
	}

	return sTrimmedString;
}