数字金额转换为中文大写金额

自己的解决方案是整数部分4位一分组，每组对应一个大单位，组内对应小单位

//yuyong 5-23
		var chineseMoney="";
					var numMoney="01.23";
					var chinese_number=["零","壹","贰","叁","肆","伍","陆","柒","捌","玖"];
					var chinese_zheng_qian1=["","万","亿"];
					var chinese_zheng_qian2=["","拾","佰","仟"];
					var chinese_ling_qian=["角","分"];
					var money_Reg=/^\d{1,12}(\.\d{1,2})?$/;
					if(!money_Reg.test(numMoney)){
						alert("数字格式不对!"); 
					}else{
						var zheng_qian=Number(numMoney.split("\.")[0])+"";
						var ling_qian=numMoney.split("\.")[1];
						var length=parseInt(zheng_qian.length/4)+(zheng_qian.length%4!=0?1:0);
						for(var x=1;x<=length;x++){ 
							var start=(x-1)*4+1;
							var temp="";
							for(var y=0;y<=3;y++){  //每四位一组中从低到高 单位为  ""->拾->佰->仟
										var a=zheng_qian.charAt(zheng_qian.length-start);
										if(a=='0'){
											if(temp!=""){ //4位一组中两个连续的零 ,中文中只读一个零
												if(zheng_qian.charAt(zheng_qian.length-start+1)!='0')
													temp=chinese_number[a]+temp;
											}
										}else
											temp=chinese_number[a]+chinese_zheng_qian2[y]+temp;
										if(start==zheng_qian.length)
											break;
										else
											start++;						
							}
							if(temp!='')
									chineseMoney=temp+chinese_zheng_qian1[x-1]+chineseMoney;
						}
						if(chineseMoney=="")
							chineseMoney=chinese_number[0];
						if(ling_qian!=undefined&&ling_qian!='00'){
							chineseMoney+="圆";
							for(a=0;a<=ling_qian.length-1;a++){
								if(ling_qian.charAt(a)!='0')
									chineseMoney+=chinese_number[ling_qian.charAt(a)]+chinese_ling_qian[a];
							}
						}else{
							chineseMoney+="圆整";
						}
						alert(chineseMoney);
					}