toBigNum:function(Num){
        for (i = Num.length - 1; i >= 0; i--) {
            Num = Num.replace(",", "")//替换tomoney()中的“,”
            Num = Num.replace(" ", "")//替换tomoney()中的空格
        }
        Num = Num.toString().replace("￥", "")//替换掉可能出现的￥字符
        if (isNaN(Num)) { //验证输入的字符是否为数字
            alert("请检查小写金额是否正确");
            return;
        }
        //---字符处理完毕，开始转换，转换采用前后两部分分别转换---//
        part = String(Num).split(".");
        newchar = "";
        //小数点前进行转化
        for (i = part[0].length - 1; i >= 0; i--) {
            if (part[0].length > 10) { alert("位数过大，无法计算"); return ""; } //若数量超过拾亿单位，提示
            tmpnewchar = ""
            perchar = part[0].charAt(i);
            switch (perchar) {
                case "0": tmpnewchar = "零" + tmpnewchar; break;
                case "1": tmpnewchar = "壹" + tmpnewchar; break;
                case "2": tmpnewchar = "贰" + tmpnewchar; break;
                case "3": tmpnewchar = "叁" + tmpnewchar; break;
                case "4": tmpnewchar = "肆" + tmpnewchar; break;
                case "5": tmpnewchar = "伍" + tmpnewchar; break;
                case "6": tmpnewchar = "陆" + tmpnewchar; break;
                case "7": tmpnewchar = "柒" + tmpnewchar; break;
                case "8": tmpnewchar = "捌" + tmpnewchar; break;
                case "9": tmpnewchar = "玖" + tmpnewchar; break;
            }
            switch (part[0].length - i - 1) {
                case 0: tmpnewchar = tmpnewchar + "元"; break;
                case 1: if (perchar != 0) tmpnewchar = tmpnewchar + "拾"; break;
                case 2: if (perchar != 0) tmpnewchar = tmpnewchar + "佰"; break;
                case 3: if (perchar != 0) tmpnewchar = tmpnewchar + "仟"; break;
                case 4: tmpnewchar = tmpnewchar + "万"; break;
                case 5: if (perchar != 0) tmpnewchar = tmpnewchar + "拾"; break;
                case 6: if (perchar != 0) tmpnewchar = tmpnewchar + "佰"; break;
                case 7: if (perchar != 0) tmpnewchar = tmpnewchar + "仟"; break;
                case 8: tmpnewchar = tmpnewchar + "亿"; break;
                case 9: tmpnewchar = tmpnewchar + "拾"; break;
            }
            newchar = tmpnewchar + newchar;
        }
        //小数点之后进行转化
        if (Num.toString().indexOf(".") != -1) {
            if (part[1].length > 2) {
                alert("小数点之后只能保留两位,系统将自动截段");
                part[1] = part[1].substr(0, 2)
            }
            for (i = 0; i < part[1].length; i++) {
                tmpnewchar = ""
                perchar = part[1].charAt(i)
                switch (perchar) {
                    case "0": tmpnewchar = "零" + tmpnewchar; break;
                    case "1": tmpnewchar = "壹" + tmpnewchar; break;
                    case "2": tmpnewchar = "贰" + tmpnewchar; break;
                    case "3": tmpnewchar = "叁" + tmpnewchar; break;
                    case "4": tmpnewchar = "肆" + tmpnewchar; break;
                    case "5": tmpnewchar = "伍" + tmpnewchar; break;
                    case "6": tmpnewchar = "陆" + tmpnewchar; break;
                    case "7": tmpnewchar = "柒" + tmpnewchar; break;
                    case "8": tmpnewchar = "捌" + tmpnewchar; break;
                    case "9": tmpnewchar = "玖" + tmpnewchar; break;
                }
                if (i == 0) tmpnewchar = tmpnewchar + "角";
                if (i == 1) tmpnewchar = tmpnewchar + "分";
                newchar = newchar + tmpnewchar;
            }
        }
        //替换所有无用汉字
        while (newchar.search("零零") != -1)
            newchar = newchar.replace("零零", "零");
        newchar = newchar.replace("零亿", "亿");
        newchar = newchar.replace("亿万", "亿");
        newchar = newchar.replace("零万", "万");
        newchar = newchar.replace("零元", "元");
        newchar = newchar.replace("零角", "");
        newchar = newchar.replace("零分", "");

        if (newchar.charAt(newchar.length - 1) == "元" || newchar.charAt(newchar.length - 1) == "角")
            newchar = newchar + "整"
        //  document.write(newchar);
        return newchar;
    },