function ChangeDivVisibility(DivId, BtnId) {
    if (document.getElementById(DivId).style.visibility == "visible") {
        document.getElementById(DivId).style.visibility = "hidden";
        document.getElementById(DivId).style.display = "none";
        document.getElementById(DivId).style.height = 0;

        document.getElementById(BtnId).innerHTML = "more details";
    }
    else {
        document.getElementById(DivId).style.visibility = "visible";
        document.getElementById(DivId).style.display = "block";
        document.getElementById(DivId).style.height = "auto";

        document.getElementById(BtnId).innerHTML = "close details";
    }

}