Redmine issue update

gistfile1.js

//Set an Interval on the function to run every 10 secs
setInterval(function() {
    //Get actual date
    var date = new Date();
    //console.log(date);
    var reDate = /(\d+)\/(\d+)\/(\d+)/;
    //Make comment date into actual date format
    jQuery('a[title]').filter(function(){
        var a = jQuery(this);
        return a.attr('title').match(reDate);
    }).each(function () {
        var a = jQuery(this);
        var d = new Date(a.attr('title').replace(reDate, "$3/$2/$1"));
        //console.log(d, 'd');
        var time_diff = date - d;
        var secs = time_diff/1000;
        var minutes = secs / 60;
        var hours = (minutes / 60);
        var days = hours / 24;
        var month = days / 30;
        var year = month / 12;
        //console.log(date, 'date');

        //Workout how many milli seconds in X
        var minInMilli = 60 * 1000;
        var hourInMilli = minInMilli * 60;
        var dayInMilli = hourInMilli * 24;
        var monthInMilli = dayInMilli * 30;
        var yearInMilli = monthInMilli * 12;

        if(time_diff<1000) {
            a.text('less than 1 second');
        }else if(time_diff<minInMilli) {
            a.text('less than a minute');
        }else if(time_diff<hourInMilli) {
            if (parseInt(minutes) > 1) {
                a.text(parseInt(minutes) + ' minutes');
            }else{
                a.text(parseInt(minutes) + ' minute');
            }
        }else if(time_diff<dayInMilli) {
            if (parseInt(hours) > 1) {
                a.text(parseInt(hours) + ' hours');
            }else{
                a.text(parseInt(hours) + ' hour');
            }
        }else if(time_diff<monthInMilli) {
            if (parseInt(days) > 1) {
                a.text(parseInt(days) + ' days');
            }else{
                a.text(parseInt(days) + ' day');
            }
        }else if(time_diff<yearInMilli) {
            if (parseInt(month) > 1) {
                a.text(parseInt(month) + ' months');
            }else{
                a.text(parseInt(month) + ' month');
            }
        }else {
            if (parseInt(year) > 1) {
                a.text(parseInt(year) + ' years');
            }else{
                a.text(parseInt(year) + ' year');
            }
        }
    });
}, 30000);

//Open external links in new tab
jQuery(document).ready(function() {
    jQuery('a.external').attr('target', '_blank');
});