// Copyright 2006-2007 javascript-array.com
var timeout = 500;
var closetimer = 0;
var ddmenuitem = 0;
var ddmenuitemId;
var ddmenuitem_currentpage = 0;

$(document).ready(function() {
    // show the current page menu initially
    $('div.currentpage').css("visibility", "visible");
}); 

// open hidden layer
function mopen(id) {
    // cancel close timer
    mcancelclosetime();

    // close old layer
    if(ddmenuitemId)
        $('#' + ddmenuitemId).css("visibility", "hidden");


    // get new layer and show it, and hide the current page
    $('div.currentpage').css("visibility", "hidden"); 
    ddmenuitemId = '' + id;
    $('#' + ddmenuitemId).css("visibility", "visible");
}

// close currently displayed layer
function mclose() {
    if (ddmenuitemId)
        $('#' + ddmenuitemId).css("visibility", "hidden");

    $('div.currentpage').css("visibility", "visible");
}

// go close timer
function mclosetime() {
    closetimer = window.setTimeout(mclose, timeout);
}

// cancel close timer
function mcancelclosetime() {
    if (closetimer) {
        window.clearTimeout(closetimer);
        closetimer = null;
    }
}

// close layer when click-out
// document.onclick = mclose;