javascript hex to string

1function hex_to_ascii(str1)
2 {
3	var hex  = str1.toString();
4	var str = '';
5	for (var n = 0; n < hex.length; n += 2) {
6		str += String.fromCharCode(parseInt(hex.substr(n, 2), 16));
7	}
8	return str;
9 }