用JAVASCRIPT格式化数字成货币（逗号隔开）

如何用JAVASCRIPT格式化数字成货币那种表示法?,比如说 34585962.00

显示 为 34,585,962.00

<script>function setCurrency(s){       if(/[^0-9\.]/.test(s)) return "invalid value";       s=s.replace(/^(\d*)$/,"$1.");       s=(s+"00").replace(/(\d*\.\d\d)\d*/,"$1");       s=s.replace(".",",");       var re=/(\d)(\d{3},)/;       while(re.test(s))              s=s.replace(re,"$1,$2");       s=s.replace(/,(\d\d)$/,".$1");       return s.replace(/^\./,"0.")       }var data1=34585962.00;document.write ("原来数值："+data1);document.write ("<br>格式化后："+setCurrency(data1));</script>

这个不支持负数,昏,谁改一下,搞个支持负数的<script>function setCurrency(s){    if(/[^0-9\.\-]/.test(s)) return "invalid value";    s=s.replace(/^(\d*)$/,"$1.");    s=(s+"00").replace(/(\d*\.\d\d)\d*/,"$1");    s=s.replace(".",",");    var re=/(\d)(\d{3},)/;    while(re.test(s))        s=s.replace(re,"$1,$2");    s=s.replace(/,(\d\d)$/,".$1");    return s.replace(/^\./,"0.")    }var data1=34585962.00;document.write ("原来数值："+data1);document.write ("<br>格式化后："+setCurrency(data1));</script>

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