function addEmUp() {
    var intSumCosts = 0;
    
    intSumCosts += parseInt(document.getElementById("input_76").value,10);
    intSumCosts += parseInt(document.getElementById("input_79").value,10);
    intSumCosts += parseInt(document.getElementById("input_82").value,10);
    intSumCosts += parseInt(document.getElementById("input_85").value,10);
    intSumCosts += parseInt(document.getElementById("input_87").value,10);
    intSumCosts += parseInt(document.getElementById("input_89").value,10);
    intSumCosts += parseInt(document.getElementById("input_91").value,10);
    intSumCosts += parseInt(document.getElementById("input_93").value,10);
    intSumCosts += parseInt(document.getElementById("input_77").value,10);
    intSumCosts += parseInt(document.getElementById("input_80").value,10);
    intSumCosts += parseInt(document.getElementById("input_83").value,10);
    intSumCosts += parseInt(document.getElementById("input_86").value,10);
    intSumCosts += parseInt(document.getElementById("input_88").value,10);
    intSumCosts += parseInt(document.getElementById("input_90").value,10);
    intSumCosts += parseInt(document.getElementById("input_92").value,10);
    intSumCosts += parseInt(document.getElementById("input_94").value,10);
    intSumCosts += parseInt(document.getElementById("input_78").value,10);
    intSumCosts += parseInt(document.getElementById("input_81").value,10);
    intSumCosts += parseInt(document.getElementById("input_84").value,10);

    var total = intSumCosts.toFixed(2);

    // Obtained from http://www.mredkj.com/javascript/nfbasic.html
    function addCommas(total) {
        total += '';
        x = total.split('.');
        x1 = x[0];
        x2 = x.length > 1 ? '.' + x[1] : '';
        var rgx = /(\d+)(\d{3})/;
        while (rgx.test(x1)) {
        x1 = x1.replace(rgx, '$1' + ',' + '$2');
        }
        return x1 + x2;
    }

    document.getElementById("input_105").value = "$" + addCommas(total);

}