function toggleSummary(id) {
    var obj1 = 'faqAnswer' + id;
    var element = document.getElementById(obj1);
    var obj2 = 'image' + id;
    var image = document.getElementById(obj2);
    if (element.style.display == "none") {
        element.style.display = "inline";
        image.src = 'images/minus.jpg';
    }
    else {
        element.style.display = "none";
        image.src = 'images/plus.jpg';
    }
}