IE浏览器调用ActiveX获取U盘中的文件

<p>
<script type="text/javascript" language="javaScript">// <![CDATA[
function GetDIVORPIV(DIV) {
        var str;
        var arrayDIV = new Array();

        if (DIV.indexOf("_") > 0) {
            arrayDIV = DIV.split("_");
            str = arrayDIV[1];
        }
        else {
            str = "";
        }
        return str;
    }

    function GetDIVandPIV(DIVPIV) {
        var strDIVandPIV;
        var strDIVPIV = DIVPIV;

        var arrayDIVPIV = new Array();

        if (strDIVPIV.indexOf("&") > 0) {
            arrayDIVPIV = strDIVPIV.split("&");

            strDIVandPIV = GetDIVORPIV(arrayDIVPIV[0]) + GetDIVORPIV(arrayDIVPIV[1]);
        }
        else {
            strDIVandPIV = "";
        }
        return strDIVandPIV;

    }

    function GetUsbSN(DIVPIVSN) {
        var UsbSN;

        var strSN = DIVPIVSN;
        var arraySN = new Array();

        if (strSN.indexOf("&") > 0) {
            arraySN = strSN.split("\\");

            if (arraySN.length > 2) {
                UsbSN = GetDIVandPIV(arraySN[1]) + arraySN[2];
            }
            else {
                UsbSN = "";
            }
        }
        else {
            UsbSN = "";
        }
        return UsbSN;

    }

    function CheckUsb() {
        var e, x;
        var ForReading = 1, RorWriting = 2;
        var fso = new ActiveXObject("Scripting.FileSystemObject");
        var bfResult = false;

        e = new Enumerator(fso.Drives)
        for (; !e.atEnd(); e.moveNext()) {
            x = e.item();
            if (x.DriveType == 1) {
                if (x.Path != "A:") {
                    bfResult = true;
                }
            }
        }
        return bfResult;
    }

    function ReadUsbSN() {
        var bfUsb;
        bfUsb = CheckUsb();
        if (bfUsb == true) {
            var n, e, x,ts;
            var ForReading=1;
            fso = new ActiveXObject("Scripting.FileSystemObject");
            e = new Enumerator(fso.Drives);
            for (; !e.atEnd(); e.moveNext())
            {
                x = e.item();

                if(x.DriveType==1)
                {
                    n=x.DriveLetter;
                    if(fso.FileExists(n+":\\aaa.txt")){
                        alert("存在");
                    } else {
                        alert("不存在");
                    }

                    //读取文件内容
                    /*ts=fso.OpenTextFile(n+":\\aaa1.txt",ForReading);
                    var s=ts.ReadLine();
                    var text=s.split(":");
                    var name=text[0],passowrd=text[1];
                    document.getElementById("name").value=name;
                    document.getElementById("password").value=passowrd;
                    ts.Close();*/
                }
            }
        }
        else {
            alert("请插入U盘");
        }
    }
// ]]></script>
</p>
<p><input onclick="ReadUsbSN()" type="button" value="获取U盘" /></p>