Assign bug to me in Bugzilla

assign_to_me.user.js

// ==UserScript==
// @name       Assign to me (Bugzilla)
// @namespace  http://wol.ph/
// @version    1.0
// @description  
// @match      http://bugzilla.3xo.eu/show_bug.cgi?id=*
// @copyright  2015, Wolph
// ==/UserScript==

var assigned_to_field = document.getElementsByName('assigned_to')[0];
var form = document.getElementsByName('changeform')[0];
form.target = '_blank';

function assignTo(email){
    assigned_to_field.value = email;
    document.getElementById('knob-reassign').checked = true;
    document.getElementById('comment').value = 'Assigning to ' + email;
    form.submit();
}

function acceptBug(){
    document.getElementById('knob-accept').checked = true;
    form.submit();
}

function assignToMe(){
    var links = document.getElementsByTagName('a');
    var i = links.length;
    while(i--){
        var link = links[i];
        if(link.innerText == 'My Requests'){
            var email = decodeURIComponent(link.href.match(/requester=([^&]+)/)[1]);
            assignTo(email);
            acceptBug();
        }
    }
}

function createButton(){
    var button = document.createElement('span');
    button.id = 'assign_to_me';
    button.innerHTML = 'me';
    button.style.border = '1px solid #666';
    button.style.padding = '2px';
    button.style.margin = '2px';
    button.style.cursor = 'hand';
    button.onclick = assignToMe;

    assigned_to_field.parentNode.insertBefore(
        button, assigned_to_field);
}

createButton();