$().ready(function() {
    var oUserName = $("#txtUserName");
    var oPwd = $("#txtPwd");

    var oBtnLogin = $("#btnLogin");
    oBtnLogin.click(function() {
        oUserName.removeClass("txtFocus").addClass("txtBlur");
        oPwd.removeClass("txtFocus").addClass("txtBlur");

        oUserName.val(oUserName.val().Trim());
        oPwd.val(oPwd.val().Trim());

        if (oUserName.val() == "" || oUserName.val() == "请输入注册邮箱") {
            //alert("请输入登录邮箱!");
            oUserName.focus().removeClass("txtBlur").addClass("txtFocus");
            return false;
        }


        if (oPwd.val() == "") {
            //alert("请输入登录密码!");
            oPwd.focus().removeClass("txtBlur").addClass("txtFocus");
            return false;
        }


        var oCode = $("#txtCode");

        if (oCode.length > 0) {
            oCode.removeClass("txtFocus").addClass("txtBlur");
            oCode.val(oCode.val().Trim());
            if (oCode.val() == "") {
                //alert("请输入验证码!");
                oCode.focus().removeClass("txtBlur").addClass("txtFocus");
                return false;
            }
        }
    })


    oUserName.focus(function() {
        if (this.value == "请输入注册邮箱") {
            this.value = "";
        }
        $(this).removeClass("colorGray").addClass("colorBlack");
    }).blur(function() {
        if (this.value == "") {
            this.value = "请输入注册邮箱";
            $(this).removeClass("colorBlack").addClass("colorGray");
        }        
    })


    oPwd.focus(function() {
        var olblCode = $("#lblCode");

        if (olblCode.css("display") == "none") {
            olblCode.css("display", "");
            olblCode.html("<img src='/images/loader.gif' align='absmiddle' style='margin-right:5px' /><span style='color:red'>验证码图片加载中...</span>");
            var imgID = new Image();
            imgID.src = "/login/GenCode.ashx?t=" + Math.random();
            imgID.onload = function() {
                olblCode.html("验证码：<input name=\"txtCode\" type=\"text\" maxlength=\"4\" id=\"txtCode\"  class='txtBlur' style='width:65px' tabindex=\"3\"/><img src=\"" + imgID.src + "\" alt=\"点击刷新验证码\" style=\"cursor:pointer;padding-left:6px;width:48px;height:20px\" id=\"imgCode\" align='absmiddle' onclick='fnImgCode(this)'/>");
            }

        }
    })

})

function fnImgCode(obj) {
    obj.src = "/login/GenCode.ashx?t=" + Math.random();
}