function IsSamePassword() {
    password_1 = document.getElementById("psw").value
    password_2 = document.getElementById("psw2").value
    if (password_1 != password_2){
        // alert("两次输入密码不一致！")
        document.getElementById("password_alert").innerHTML = "<font color='red'>两次输入密码不一致!</font>"
        document.getElementById("submit_btn").disabled = true
    }else{
        document.getElementById("password_alert").innerHTML = ""
        document.getElementById("submit_btn").disabled = false
    }
}