document.addEventListener('DOMContentLoaded', documentReady, false);
window.onmessage = (event) => {
    if (event.data == "close") {
        document.querySelector("dialog[open]").close();
    }
}

function documentReady() {
    const iframe = document.querySelector("iframe");
    iframe.onload=(event) => {
        const openDialog = document.querySelector("dialog[open]");
        if (openDialog) {
            openDialog.close();
            window.location.reload();
        } else {
            document.querySelector("dialog").showModal()
        }
    }
}