function ShowHideElement(elementId) {
    if (document.getElementById(elementId).style.display == "none")
        document.getElementById(elementId).style.display = "block";
    else
        document.getElementById(elementId).style.display = "none";
}

function HideElement(elementId) {
    document.getElementById(elementId).style.display = "none";
}

function ShowElement(elementId) {
    document.getElementById(elementId).style.display = "block";
}

function ShowHideElementWithArrow(elementId, arrowTdId) {
    if (document.getElementById(elementId).style.display == "none") {
        document.getElementById(elementId).style.display = "block";
        document.getElementById(arrowTdId).className = "article-arrow-down-td";
    }
    else {
        document.getElementById(elementId).style.display = "none";
        document.getElementById(arrowTdId).className = "article-arrow-td";
    }
}