function showAdvSearch(_ctrl,_hdn) {
    var ctrl = document.getElementById(_ctrl)
    var hdn = document.getElementById(_hdn)
    
     if (ctrl.style.display == "none") {
        ctrl.style.display = "block";
        hdn.value = 1;
   
    }
    else {
        ctrl.style.display = "none";
        hdn.value = 0;
    }
    return false;
} 

function showAnswer(ctrl , ctrl2) {


    _ctrl = document.getElementById(ctrl);
    _ctrl2 = document.getElementById(ctrl2);
    if (_ctrl.style.display == "none") 
    {
        _ctrl.style.display = "";
        _ctrl2.style.display = "none";
    }
    else {
        _ctrl.style.display = "none";
        _ctrl2.style.display = "";
    }
}


function txtSearch_doClick(buttonName, hdn, e, txtSearch) {
    var _txtSearch = document.getElementById(txtSearch)
    var _hdn = document.getElementById(hdn)

    var key;
    if (window.event)
        key = window.event.keyCode;
    else
        key = e.which;

    if (key == 8 || key == 46) {
        if (_txtSearch.value.length == 1) {

            if (_hdn.value == '') { _txtSearch.value = ''; }
            _hdn.value = '';
        }
        else {
            if (_hdn.value == '') { _txtSearch.value = ''; }
            _hdn.value = 1;
        }
    }

    else {
        if (_hdn.value == '') { _txtSearch.value = ''; }
        _hdn.value = 1;
    }


    if (key == 13) {

        var btn = document.getElementById(buttonName);
        if (btn != null) {
            btn.click();
            event.keyCode = 0
        }
    }
}

function ClearTextBox(ctrl, text) {
    _ctrl = document.getElementById(ctrl);
    if (_ctrl.value == text)
    { _ctrl.value = "" }
}


function ChangeWaterMark(ctrl, text) {
    _ctrl = document.getElementById(ctrl);

    if (_ctrl.value == "") {
        _ctrl.value = text
    }
}