Attempt 4 LINKMODE (YWOT)

/*
    Automatic Links for yourworldoftext.com.
    Copyright (C) 2017 Your World of Text user Ancientcraft.

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

var linkmode = true;

/* The "Create link to URL" button in the menu. */
var urlprompt =
    document.getElementById("nav").
    getElementsByTagName("ul")[0].
    getElementsByTagName("li")[4].
    getElementsByTagName("div")[0];

/* The button to enable link creation. */
var linksubmitbtn =
    document.getElementById("url_input_submit").
    getElementsByTagName("input")[0];

/* The URL of the link you want to create. */
var url = document.getElementById("url_input_form_input").value;

var init = prompt("Enter the URL you want and then press [OK]. This URL must be an HTTP or HTTPS one.\n\nAlternatively, press [CANCEL] to cancel and terminate the script.\n\nTo stop the script after starting it, you can enter into the console:\n\nlinkmode = false;");

function auto() {
    if(linkmode) {
        urlprompt.click();
        url = init;
        linksubmitbtn.click();
        setTimeout(auto, 250);
    }
}

if (init) {
    auto();
} else {
    linkmode = false;
}