$(document).ready(function(){    

    //Init main navigation menu
    init_main_nav();
        
    //Display current main navigation item
    display_current_main_nav_item();

function init_main_nav()
{
    if ($("#nav"))
    {
        $("#nav li ul").hide();

    }
}

function display_current_main_nav_item()
{
    pageID = $("body").attr("id");
    if(pageID && pageID != "popup_table")
    {
        
        pageID = pageID.slice(4);
        mainNavId = pageID.slice(0,1);
        var navArray = $("#nav>li");        
        if (pageID != "0")
            for (var i=0; i<(navArray.length+1); i++) {
                if (i != mainNavId){
                    $("#nav"+i).hide();
                }
            }
        {        
            current_item = $("#nav"+pageID);
            current_item.addClass("active");
            current_item.find("a:eq(0)").addClass("active");
            current_item.find("a:eq(0)").show();
            expand_current_item(current_item);
            current_item.show();
        }

    } 
}

function expand_current_item(current)
{             
    current.find("ul:eq(0)").show();
    if(current.parent("ul:eq(0)").attr("id") != "nav")
    {        
        expand_current_item(current.parents("li:eq(0)"));
    }
    else
    {        
        if (current.find("li:eq(0)").attr("id") != null)
        {            
            current.find("a:eq(0)").addClass("parent");
        }
    }
}


    
    $("a#button").click(function () {
      $("div#steps").slideToggle("fast");
      $(this).toggleClass("up");
    });

});