//On Page Load

initReturnToTop();

//Functions below

function initReturnToTop() {
    //setup our html
    var returnDiv = '\
        <div id="ReturnToTop" style="position:fixed; cursor:pointer; color:#0096ff; font-size:0.7em; background-color:#171717; -moz-border-bottom-left-radius: 13px; border-bottom-left-radius: 13px; -moz-border-bottom-right-radius: 13px; border-bottom-right-radius: 13px; border:2px solid #2b2b2b; padding:2px; padding-left:10px; padding-right:10px; z-index:1000; top:-10px; right:0px;">RETURN TO TOP</div>\
    ';

    $('body').prepend(returnDiv);

    //hook into scroll and resize events
    $(window).scroll(function () {
        processReturnToTop();
    });
    $( window ).resize(function() {
        processReturnToTop();
    });

    //setup a click handler
    $('#ReturnToTop').click(function(){
       $("html, body").animate({ scrollTop: 0 }, 300);
    });

    //run the sub-routine manually once at page load
    processReturnToTop();
}

function processReturnToTop() {
    var threshold = 300; //The higher the number, the further down the page the widget rolls in
    var curOffset = $(document).scrollTop();
    if (curOffset > threshold) {
        $('#ReturnToTop').animate({
            'top':parseInt($('#pvpnet-bar').height()) + 'px'
        },500);
    } else {
        $('#ReturnToTop').stop(true).animate({
            'top':0
        },500);
    }
}