Userscript for alerting new matches on steamep.com

get_me_wayto.user.js

// ==UserScript==
// @name        Get me Wayto
// @namespace   rissole
// @description Check for new people selling player cards.
// @include     https://steamep.com/matches
// @version     1
// @grant       GM_getValue
// @grant       GM_setValue
// ==/UserScript==

document.title = "Nothing new";

unsafeWindow.jQuery(function() {
    setTimeout(realBegin, 0);
});

function realBegin() {
    var idSet = [];
    unsafeWindow.jQuery('p.well').each(function(i, p) {
        idSet.push(p.id);
    });
    var lastIdSet = JSON.parse(GM_getValue('lastIdSet', '[]'));
    if (idSet.length > 0 && lastIdSet.length > 0 && idSet[0] != lastIdSet[0]) {
        alertNew();
        GM_setValue('lastIdSet', JSON.stringify(idSet));
        return;
    }
    setTimeout(function() {
        location.reload();
    }, 5000);
}

function alertNew() {
    playDrop();
    flipTitle();
}

function flipTitle() {
    document.title = "NEW PERSON!";
    setTimeout(function() {
        document.title = "ALERT!";
        setTimeout(flipTitle, 1000);
    }, 1000);
}

var DROP_SOUND_SRC = "https://dl.dropboxusercontent.com/u/84590655/drop.ogg";

function playDrop() {
    var drop = document.getElementById("facebook_gags_drop");
    if (drop === null) {
        drop = document.createElement("audio");
        drop.src = DROP_SOUND_SRC;
        drop.id = "facebook_gags_drop";
        document.body.appendChild(drop);
    }
    drop.play();
}