ver 0.3.1

function getAdsByCategory(id) {
    var adsArray = [];

    for (var i = 0; i < objJson.length; i++) {
        if (objJson[i].category == id) {
            adsArray.push(objJson[i]);
        }
    }

    document.getElementById("listingTable").innerHTML = "";

    for (var j = 0; j < adsArray.length; j++) {
        document.getElementById("listingTable").innerHTML += adsArray[j].adName;
    }
}