var
			iCounter = 0,
			oMatch = null
			;

		sSubject = Utils.trim(sSubject.replace(/[\s]+/, ' '));

		do
		{
			oMatch = /^Re(\[([\d]+)\]|):[\s]{0,3}Re(\[([\d]+)\]|):/ig.exec(sSubject);
			if (!oMatch || Utils.isUnd(oMatch[0]))
			{
				oMatch = null;
			}

			if (oMatch)
			{
				iCounter = 0;
				iCounter += Utils.isUnd(oMatch[2]) ? 1 : 0 + Utils.pInt(oMatch[2]);
				iCounter += Utils.isUnd(oMatch[4]) ? 1 : 0 + Utils.pInt(oMatch[4]);

				sSubject = sSubject.replace(/^Re(\[[\d]+\]|):[\s]{0,3}Re(\[[\d]+\]|):/gi, 'Re' + (0 <
iCounter ? '[' + iCounter + ']' : '') + ':');
			}

		}
		while (oMatch);

		sSubject = sSubject.replace(/[\s]+/, ' ');
		return sSubject;