function getImageNum()
{
    // todo Make this based on day of the week
//    var now = new Date();
//    var num = 0;
//    var hours = now.getHours();
//    if (hours < 8 || hours > 16)
        num = 1;
//    else
//        num = 2;
    return num;
}
function setImage(baseName)
{
    var num = getImageNum();
    var theDiv = document.getElementById("indexDiv");
    theDiv.style.backgroundImage = "url(\'images/" + baseName + num + ".png\')";
}
function setHeaderImage(baseName)
{
    var num = getImageNum();
    var theDiv = document.getElementById("theDiv");
    theDiv.src = "images/" + baseName + num + ".png";
}
function setTitleImage(document,rss,site)
{
    var num = getImageNum();
    var theDiv = document.getElementById("theDiv");
    var bits = document.URL.split('/');
	var pageName = bits[bits.length - 1].split('?')[0];
	pageName = pageName.split('#')[0];
	pageName = pageName.substr(0,pageName.length - 4);
	var src = "images/hdr" + num + "_" + pageName + ".png";
	if (arguments.length == 3)
		src = site + src;
	theDiv.src = src;

    if (arguments.length >= 2 && rss != null)
    {
        theDiv.useMap = "#rss";

        var map = document.createElement('map');
        map.setAttribute("id","rss");
        map.setAttribute("name","rss");

        var area = document.createElement('area');
        area.setAttribute("shape","rect");
        area.setAttribute("coords","616,11,631,26"); // todo must be in step with dfhsheaderindex.xml
        area.setAttribute("href",rss);

        map.appendChild(area);

        theDiv.parentNode.appendChild(map);
    }
}

var savedHtml,savedURL;
function revealPhoto(baseName)
{
    var indexDiv = document.getElementById("indexDiv");
    savedHtml = indexDiv.innerHTML;
    indexDiv.innerHTML = "<img alt=\"Hide the photo\" title=\"Hide the photo\" style=\"cursor:pointer;border:none;position:absolute;left:8px;top:395px;\" onclick=\"restoreIndex()\" src=\"images/bullet/close.gif\">";
    savedURL = indexDiv.style.backgroundImage;
    indexDiv.style.backgroundImage = "url(\'images/plain_" + baseName + getImageNum() + ".png\')";
}
function restoreIndex()
{
    var indexDiv = document.getElementById("indexDiv");
    indexDiv.innerHTML = savedHtml;
    indexDiv.style.backgroundImage = savedURL;
}