function Rtrim(instring) {
	// Remove trailing spaces from input string

		var start = instring.length - 1;
		var end = instring.length;
		var last_char = instring.substring(start,end);

		while (last_char == " ") {
			start--;
			end--;
			instring = instring.substring(0,end);
			last_char = instring.substring(start,end);
		}
		return instring;
	}

	function Ltrim(instring) {
	// Remove leading spaces from input string

		var first_char = instring.substring(0,1);

		while (first_char == " ") {
			instring = instring.substring(1,instring.length);
			first_char = instring.substring(0,1);
		}
		return instring;
	}