gistfile1.js

if(typeof jQuery !== 'undefined'){
    jQuery(function($) {
        var dateUpdated = "";
 
        var reDate = /(\d+)\/(\d+)\/(\d+)/;
        var reIssues = /issues\/\d+/;
 
        var titleDate = $('p.author a').last().attr('title');
        var style= 'position: fixed;bottom: 0px;margin-bottom: 0px;width: 100%;padding: 12px 0px 13px 30px;background-position-y: 12px;';
        var warning = '<div class="flash warning" style="'+style+'">This issue has been updated since you last saw it. <a href="javascript:location.reload(true);">Refresh now</a></div>';
        var currentURL = window.location.pathname;
        var favi = $('[rel="shortcut icon"]');
 
        //Swap year and day, convert to Date obj
        if (titleDate) {
            titleDate = (titleDate).replace(reDate, "$3/$2/$1");
            titleDate = new Date(titleDate);
        }
 
        function changeTitle() {
            $.get(
                location.pathname + '.json',
                function(data){
                    dateUpdated = data.issue.updated_on;
                    dateUpdated = new Date(dateUpdated);
                    dateUpdated.setSeconds(0);
                    if (dateUpdated.getTime() > titleDate.getTime()) {
                        //If theres a time diff, change the favicon
                        favi.attr('href', 'http://i.imgur.com/Y4xLgSt.png');
                        $('#wrapper').append(warning);
                    }else{
                        //If not, keep checking, dammit!
                        /*
                        console.group("Updated?");
                        console.log(dateUpdated.getTime(), dateUpdated, ' Time stamp on server');
                        console.log(titleDate.getTime(), titleDate);
                        console.log('CHECKING BZZZKP--d[ o_o ]b');
                        console.groupEnd();
                        */
                        setTimeout(changeTitle, 10000);
                    }
                }
            );
        }
        if (currentURL.match(reIssues)) changeTitle();
    });
}