YouTrack show estimation totals on agile board (userscript)

gistfile1.js

// ==UserScript==
// @name       YouTrack show agile estimation totals
// @namespace  http://
// @version    0.1
// @match      http://*.myjetbrains.com/*/agile/*
// ==/UserScript==

function run() {

    $(".sb-column").each(function(index)
    {
        var total = 0;
        
        $(this).find(".sb-task-estimate").each(function()
        {
            var estimate = $(this).data("value");
            if (estimate.substr(-1) == 'h')
            {
                total += parseInt(estimate.substr(0, estimate.length-1));
            }
            else if (estimate.substr(-1) == 'm')
            {
                total += parseFloat(Number(estimate.substr(0, estimate.length-1) / 60).toFixed(1));
            }
            else if (estimate.substr(-1) == 'd')
            {
                total += parseInt(estimate.substr(0, estimate.length-1) * 8);
            }
        });
        
        $(".sb-column-title:eq("+(index)+") .estimate").remove();
        $(".sb-column-title:eq("+(index)+")").prepend(
            "<div class='estimate' style='float: right; font-weight: bold !important;color: grey; font-size: 110%;'>" +
            (total) + "h</div>"
        );
    });
    
    
}

setInterval(run, 1000);