//if (typeof String.addLeadingChar)

if (typeof Object.size !== "function") {
	var fnSize	= function (obj) { return Object.keys(obj).length; };

	if (typeof Object.keys !== "function") {
		fnSize = function(obj) {
			var size = 0, key;
			for (key in obj) {
				if (obj.hasOwnProperty(key)) size++;
			}
			return size;
		};
	}

	Object.size	= fnSize;
}