function CalculateNOI() {
    var unit = document.getElementById('txtUnit').value;
    if (unit > 0) {
        var noi3 = parseInt(unit) * 4500 * .03;
        document.getElementById('spNoi3').innerHTML = '$' + noi3;
        var avi3 = parseInt(noi3) / .075;
        document.getElementById('spAvi3').innerHTML = '$' + avi3;
        var noi6 = parseInt(unit) * 4500 * .06;
        document.getElementById('spNoi6').innerHTML = '$' + noi6;
        var avi6 = parseInt(noi6) / .075;
        document.getElementById('spAvi6').innerHTML = '$' + avi6;
        var noi9 = parseInt(unit) * 4500 * .09;
        document.getElementById('spNoi9').innerHTML = '$' + noi9;
        var avi9 = parseInt(noi9) / .075;
        document.getElementById('spAvi9').innerHTML = '$' + avi9;
    }
}
function NumericOnly(e) {
    var key = window.event ? event.keyCode : e.which
    if ((key >= 48 && key <= 57) || (key == 8) || (key == 9) || (key == 0) || (key == 127)) {
    }
    else {
        return false;
    }
}
function CalculateRES() {    
    var rate = document.getElementById('txtRate').value;
    var unit = document.getElementById('txtUnit').value;
    var nor = (parseInt(unit) * parseInt(rate)) / 100;
    if (nor > 0) {
        document.getElementById('spNos').innerHTML = nor;
    }
    var found = rate.search("%");
    if (found < 0) {
       
        document.getElementById('txtRate').value = document.getElementById('txtRate').value + '%';
    }
}