MVC 生成安全验证码(例：用于登陆验证) 方法2

<td>
<img id="imgValidate" src="/Account/GetValidateCode" align="top" style="width:65px">
<a href="javascript:void();" target="_blank" class="baidu-highlight" onclick="ReFresh()">点击刷新验证码</a>
</td>

    function ReFresh() {
        var valiCode = document.getElementById("imgValidate");
        valiCode.src = "/Account/GetValidateCode?time=" + Math.random() * 1000;

        //document.getElementById("imgValidate").src = "/Account/GetValidateCode?rn=" + Math.random() * 1000;
    }