var active_toolbox = -1;
function toggleLinks(obj){
    var num = obj.id.split("_");
    num = num[num.length - 1];
    var toolbox = document.getElementById("toolbox_"+num);
    var close_icon = document.getElementById("close_toolbox");
    if(close_icon == null){
        close_icon = document.createElement("img");
        close_icon.id = "close_toolbox";
        close_icon.src = window.location.protocol+"//"+window.location.host+"/img/close_icon.jpg";
        close_icon.onclick = function(){
            toggleLinks(this.parentNode);
        }
        close_icon.style.position = "absolute";
        close_icon.style.top = "3px";
        close_icon.style.right = "3px";
    }else{
        close_icon.parentNode.removeChild(close_icon);
    }
    toolbox.appendChild(close_icon);
    if(toolbox.style.display == 'block') toolbox.style.display = 'none';
    else toolbox.style.display = 'block';
    if(active_toolbox != -1 && active_toolbox != num)
        document.getElementById("toolbox_"+active_toolbox).style.display = 'none';
    active_toolbox = num;
}