function ltrim(orig_string) {
	var modif_string;
	modif_string = orig_string;
	
	while ((modif_string.charAt(0) == ' ') ||
		   (modif_string.charAt(0) == '\t') ||
		   (modif_string.charAt(0) == '\n') ||
		   (modif_string.charAt(0) == '\r') ||
		   (modif_string.charAt(0) == '\0') ||
		   (modif_string.charAt(0) == '\x0B')) {
		modif_string = modif_string.substr(1);
	};
	return modif_string;
};

function rtrim(orig_string) {
	var modif_string;
	modif_string = orig_string;
	
	while ((modif_string.charAt(modif_string.length-1) == ' ') ||
		   (modif_string.charAt(modif_string.length-1) == '\t') ||
		   (modif_string.charAt(modif_string.length-1) == '\n') ||
		   (modif_string.charAt(modif_string.length-1) == '\r') ||
		   (modif_string.charAt(modif_string.length-1) == '\0') ||
		   (modif_string.charAt(modif_string.length-1) == '\x0B')) {
		modif_string = modif_string.substr(0,modif_string.length-1);
	};
	return modif_string;
};

function trim(orig_string) {
	var modif_string;
	modif_string = rtrim(orig_string);
	modif_string = ltrim(modif_string);
	return modif_string;
};