function hideAll()
    {
        var boxes = document.getElementsByName("mark");
        for(var i = 0; i < boxes.length; i++) {
            if(boxes[i].checked) {
                boxes[i].checked = false;
                switchLayer(false, layers[i].obj);
                chosen.push(i);
            }
        }
    }


    function showLayerbox() {

        var layerbox = document.getElementById("box");
        // Left size of more control
        var offsetX = 7;    //278
        // Top size of more control plus more button height
        var offsetY = 7 + 19;

        var lpos = new GControlPosition(G_ANCHOR_TOP_RIGHT, new GSize(offsetX, offsetY));
        lpos.apply(layerbox);
        if(window.timer) clearTimeout(timer);
        layerbox.style.display = "block";
    }


    function setClose(e) {

    if (!e)
        e = window.event;
        
    var layerbox = document.getElementById("box");

    if (checkMouseLeave(layerbox, e))
        timer = window.setTimeout(function() {
            layerbox.style.display = "none"; }, 400);
        }


    function checkMouseLeave(element, evt)
    {
        /* Avoid firing a mouseout event
        *  when the mouse moves over a child element.
        *  Borrowed from:
        *  http://www.faqts.com/knowledge_base/view.phtml/aid/1606/fid/145
        */
        if(element.contains && evt.toElement) {
            return !element.contains(evt.toElement);
        }
        else if(evt.relatedTarget) {
            return !containsDOM(element, evt.relatedTarget);
        }
    }


    function containsDOM(container, containee)
    {
        var isParent = false;
        do {
            if((isParent = container == containee))
            break;
            containee = containee.parentNode;
        }
        while(containee != null);
        return isParent;
    }

    function MoreControl() {};
    MoreControl.prototype = new GControl();
    
    MoreControl.prototype.initialize = function(map) {
        var more = document.createElement("div");
        more.style.border = "1px solid black";
        more.title = "Ajouter/Supprimer des options";
        var inner = document.createElement("div");
        inner.id = "more_inner";
        inner.appendChild(document.createTextNode("Plus ..."));
        more.appendChild(inner);
        more.onmouseover = showLayerbox;
        more.onmouseout = setClose;
        more.onclick = showLayerbox;
        map.getContainer().appendChild(more);
        return more;
    }


    MoreControl.prototype.getDefaultPosition = function() {
        return new GControlPosition(G_ANCHOR_TOP_RIGHT, new GSize(7, 7)); // original : (278,7)
    }