function TrimLeft( str ) {
	var resultStr = "";
	var i = len = 0;

	// Return immediately if an invalid value was passed in
	if (str+"" == "undefined" || str == null)
		return null;

	// Make sure the argument is a string
	str += "";
	if (str.length == 0) 
		resultStr = "";
	else { 
		// Loop through string starting at the beginning as long as there
		// are spaces.
		// len = str.length - 1;
		len = str.length;

		while ((i <= len) && (str.charAt(i) == " "))
			i++;
		// When the loop is done, we're sitting at the first non-space char,
		// so return that char plus the remaining chars of the string.
		resultStr = str.substring(i, len);
	}
	return resultStr;
}

function TrimRight( str ) {
	var resultStr = "";
	var i = 0;
	
	// Return immediately if an invalid value was passed in
	if (str+"" == "undefined" || str == null) 
		return null;

	// Make sure the argument is a string
	str += "";

	if (str.length == 0) 
		resultStr = "";
	else {
		// Loop through string starting at the end as long as there
		// are spaces.
		i = str.length - 1;
		while ((i >= 0) && (str.charAt(i) == " "))
		i--;

		// When the loop is done, we're sitting at the last non-space char,
		// so return that char plus all previous chars of the string.
		resultStr = str.substring(0, i + 1);
	}
	return resultStr; 
}

function Trim( str ) {
	var resultStr = "";

	resultStr = TrimLeft(str);
	resultStr = TrimRight(resultStr);

	return resultStr;
}