function getElementsByClassName(stringElementType, stringClassName) {

    d = document.getElementsByTagName(stringElementType);
    j = 0;
    var cl = new Array()
    blnExcluding = false;
    if (stringClassName.indexOf('!') == 0) {
        blnExcluding = true;
        stringClassName = stringClassName.substring(1);
    }
    for (i = 0; i < d.length; i++) {
        if (blnExcluding) {
            if (d[i].className != stringClassName) {
                cl[j] = d[i];
                j++
            }
        } else {

            if (d[i].className == stringClassName) {
                cl[j] = d[i];
                j++
            }
        }
    }
    return cl
}

function deleteNode(idElement) {
    var objElement = document.getElementById(idElement);
    var parentNode = objElement.parentNode;
    parentNode.removeChild(objElement);
}