100分求助如何用javascript语言把XML转换成JSON

RT 如何使用JavaScript把一份xml格式的文件中的data读取转换成JSON 数组格式，弄好的在加分数
XML code:

- <channel>
<title>Key Events from Joe Santoro</title>
- <item>
<title>IMPACT 2010</title>
<events:start>May 02, 2010 12:00 AM</events:start>
<events:end>May 07, 2010 12:00 AM</events:end>
</item>
- <item>
<title>IMPACT 2010</title>
<events:start>May 02, 2010 12:00 AM</events:start>
<events:end>May 07, 2010 12:00 AM</events:end>
</item>
- </channel>



转换成这样的
JScript code:

var json= [{
"title": "IMPACT 2010",
"events_start": "May 02, 2010 12:00 AM",
"events_end": "May 07, 2010 12:00 AM"
},
{
"
"title": "IMPACT 2010",
"events_start": "May 02, 2010 12:00 AM",
"events_end": "May 07, 2010 12:00 AM"
}];

---

输出的结果是:JScript code

---

Code highlig