var popupVisible = false;

$().ready(function() {
    $('#wbencPopupBtn').click(function() {
        showPopup();
    });
    
    $('#wbencPopup img').click(function() {
        hidePopup();
    });
});

function showPopup() {
    if(popupVisible)
        return;

    $('#wbencPopup').show('slide', { direction: 'up' }, 500);
    popupVisible = true;
}

function hidePopup() {
    if(!popupVisible)
        return;

    $('#wbencPopup').hide('slide', { direction: 'down' }, 500);
    popupVisible = false;
}