function createCode(flag) {
    if (flag == "0") {
        /*清空输入框*/
        document.getElementById("username").value = "";
        document.getElementById("password").value = "";
        document.getElementById("keycodes").value = "";
    }
    else {
        document.getElementById("keycodes").value = "";
    }
      
    ReloadValidatorImg();

}

function validate(inputCode) {
    //从cookies获取验证代码
    var tempcode = GetCookiesCode("ImageV");
    if (tempcode == null || tempcode == "")
    { alert("验证码丢失或是您的浏览器不支持Cookies！"); }
    else {
        if (inputCode.length <= 0) {
            alert("请输入验证码！");
            return false;
        }
        else if (inputCode.toLowerCase() != tempcode.toLowerCase()) {
            alert("验证码输入错误！");
            document.getElementById("keycodes").value = "";
            return false;
        }
        else {
            return true;
        }
    }

}
function ReloadValidatorImg() {
    var imgobj = document.getElementById("ImageCheck");
    imgobj.src = "../Identifyingcode.aspx?tmp=" + new Date().getSeconds();
}

//获取cookies里的验证代码
var GetCookiesCode = function(sName) {
    var CodeNumber = new String();
    var aCookie = document.cookie.split("; ");
    for (var i = 0; i < aCookie.length; i++) {
        var aCrumb = aCookie[i].split("=");
        if (sName == aCrumb[0])
            CodeNumber = unescape(aCrumb[1]);
    }
    return CodeNumber;
}