Display a notice at top of questions, showing whether you've already close-voted.

CVReminder.user.js

// ==UserScript==
// @name         Close Vote Reminder
// @namespace    http://thisisnotafish.net/
// @version      0.1
// @description  Display a notice at top of questions, showing whether you've already close-voted.
// @author       Mogsdad
// @match        http*://stackoverflow.com/questions/*
// @grant        none
// ==/UserScript==
/* jshint -W097 */
'use strict';

(function(){
    var headerWidth = $('#header').width();
    var logoWidth = $('#hlogo').width();
    var navWidth = $('#hmenus').width();
    var availableWidth = headerWidth - (logoWidth + navWidth);

    var noticeHolder = $('<div/>').css({'position':'absolute','left':logoWidth + 'px','font-size':'2em','font-weight':'bold','line-height':'75px','width':availableWidth + 'px','text-align':'center'});
    $('#hmenus').before(noticeHolder);

    $(document).ajaxComplete(function() { 
        var alreadyvoted = $( ".close-question-link[title^='You voted']" );
        console.log( alreadyvoted.length );
        if (alreadyvoted.length) {
            noticeHolder.html(alreadyvoted.length ? '<span style="color:maroon">Previously voted.</span>' : '<span style="color:green">Please vote!</span>');
            //alert( 'You already voted.' );
        }
    });

    //<a href="#" class="close-question-link" title="You voted to close as 'too broad'. 2 more votes from other users are needed to close this question." data-questionid="34221041" data-isclosed="false">close    <span class="existing-flag-count">3</span></a>
})();