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function Chinese(num)
{
    if(!/^\d*(\.\d*)?$/.test(num)){alert("Number is wrong!"); return false;}

    var AA = new Array("零","壹","贰","叁","肆","伍","陆","柒","捌","玖");
    var BB = new Array("元","拾","佰","仟","萬","億","","");
    var CC = new Array("角","分","厘");
   
    var a = (""+ num).replace(/(^0*)/g, "").split("."), k = 0, re = "";

    for(var i=a[0].length-1; i>=0; i--)
    {
        switch(k)
        {
            case 0 : re = BB[7] + re; break;
            case 4 : if(!new RegExp("0{4}\\d{"+ (a[0].length-i-1) +"}$").test(a[0]))
                     re = BB[4] + re; break;
            case 8 : re = BB[5] + re; BB[7] = BB[5]; k = 0; break;
        }
        if(k%4 == 2 && a[0].charAt(i+2) != 0 && a[0].charAt(i+1) == 0) re = AA[0] + re;
        if(a[0].charAt(i) != 0) re = AA[a[0].charAt(i)] + BB[k%4] + re; k++;
    }

    if(a.length>1) //加上小数部分(如果有小数部分)
    {
        re += BB[6];
        for(var i=0; i<a[1].length; i++)
        {
          if(i>2) break;
          re += AA[a[1].charAt(i)] + CC[i];
        }
    }
    return re;
}
alert(Chinese("1000200003.456789"))