function strReplaceAll(str,strFind,strReplace)
{
	var returnStr = str;
	var start = returnStr.indexOf(strFind);
	while (start>=0)
	{
		returnStr = returnStr.substring(0,start) + strReplace + returnStr.substring(start+strFind.length,returnStr.length);
		start = returnStr.indexOf(strFind,start+strReplace.length);
	}
	return returnStr;
}

function unamp(str) {
  return strReplaceAll(str,'&','&');
}