function getAbsoluteLeft(e)
{
    var dx = 0;
    while( e != null ) {
        dx += e.offsetLeft;
        e = e.offsetParent;
    }
    return dx;
}

function getAbsoluteTop(e)
{
    var dy = 0;
    while( e != null ) {
        dy += e.offsetTop;
        e = e.offsetParent;
    }
    return dy;
}

function hideMap()
{
   var e = document.getElementById("info");
   e.style.display = "none";
}

function swapImage(fileName)
{
   var e = window.event.srcElement;
   e.src = fileName;
}

function showMap(eSrc)
{
   var e = document.getElementById("info");
   e.style.left = getAbsoluteLeft(eSrc) - 290;
   e.style.top = getAbsoluteTop(eSrc);
   e.style.display = "";
}