//人民币金额转大写程序 JavaScript版     //CopyRight Bardo QI     function numToCny(num){         var capUnit = ['万','亿','万','圆',''];         var capDigit = { 2:['角','分',''], 4:['仟','佰','拾','']};         var capNum=['零','壹','贰','叁','肆','伍','陆','柒','捌','玖'];         if (((num.toString()).indexOf('.') > 16)||(isNaN(num)))              return '';         num = (Math.round(num*100)/100).toString();         num =((Math.pow(10,19-num.length)).toString()).substring(1)+num;         var i,ret,j,nodeNum,k,subret,len,subChr,CurChr=[];         for (i=0,ret='';i<5;i++,j=i*4+Math.floor(i/4)){             nodeNum=num.substring(j,j+4);             for(k=0,subret='',len=nodeNum.length;((k<len) && (parseInt(nodeNum.substring(k))!=0));k++){                 CurChr[k%2] = capNum[nodeNum.charAt(k)]+((nodeNum.charAt(k)==0)?'':capDigit[len][k]);                 if (!((CurChr[0]==CurChr[1]) && (CurChr[0]==capNum[0])))                     if(!((CurChr[k%2] == capNum[0]) && (subret=='') && (ret=='')))                         subret += CurChr[k%2];             }             subChr = subret + ((subret=='')?'':capUnit[i]);             if(!((subChr == capNum[0]) && (ret=='')))                 ret += subChr;         }         ret=(ret=='')? capNum[0]+capUnit[3]: ret;           return ret;     }