function lineNumbers(str) {
	var rtrn ="";

	var e = str.split("<br />");

	var numString = e.length + '';
	var digits = numString.length;

	for (var i = 0; i < e.length; i++) {
		var spaces = "";
		var istring = i + '';
		var idigits = istring.length;
		for (var j = 0; j < (digits - idigits); j++) {
			spaces += "&nbsp;";
		}
		e[i] = '<span class="lnumber">' + spaces + i + '</span>' + " " + e[i];
		rtrn += e[i] + "<br />";
	}
	return rtrn;
}