var old = null;
function goToHome(){
    window.location = "/";
}
function mouseOverWithDisplayNone(id){
    if(old){
        document.getElementById(old).style.display = "none";
    }
    document.getElementById(id).style.display = "block";
    old = id;
}
function mouseOutWithDisplayNone(id){
    document.getElementById(id).style.display = "none";
}

function layerOpen(layer){
    if(old!=null){
        document.getElementById(old).style.display = "none";
        document.getElementById("link"+old).className = "";
    }
    document.getElementById(layer).style.display = "block";
    document.getElementById("link"+layer).className = "active";
    old=layer;
}

function checkPhoto(id,width){
    var photo   = document.getElementById(id);
    var height  = photo.clientHeight;
    if(photo.clientWidth > width){
        photo.height = height / (photo.clientWidth/width);
        photo.width  = width;
    }
}