function swp(id, img) {
    document.getElementById(id).src = 'img/' + img;
}


function pop() {
    document.getElementById('popmenu').style.display = 'block';
    document.getElementById('popmenu').style.visibility = 'visible';
}

function popoff() {
    document.getElementById('popmenu').style.display = 'none';
    document.getElementById('popmenu').style.visibility = 'hidden';
}


function jpop() {
    $("#popmenu").fadeIn("slow");
}

function jpopoff() {
    $("#popmenu").fadeOut("slow");
}


function showid(varid) {
    if (document.getElementById(varid) != null) {
        document.getElementById(varid).style.display = 'inline'
        document.getElementById(varid).style.visibility = 'visible'
    }
}

function hideid(varid) {
    if (document.getElementById(varid) != null) {
        document.getElementById(varid).style.display = 'none'
        document.getElementById(varid).style.visibility = 'hidden'
    }
}