//wait for html site to be ready before executing init()
if (document.readyState == "complete") {
    init();
} else {
    document.addEventListener("DOMContentLoaded", init);
}


function init() {
    var button = document.getElementById("edit_user");

    button.onclick = function() {
        var row = document.getElementsByClassName("selected")[0];
        document.getElementById('user_id_val').value = row.id;
        this.form.submit();
    }
}