function mainmenu(){  
    /*Main drop down menu*/
    $(" #mainNav ul ").css({display: "none"}); // Opera Fix
    $(" #mainNav li").hover(function(){
        $(this).find('ul:first').css({visibility: "visible",display: "none"}).show(400);
        },function(){
        $(this).find('ul:first').css({visibility: "hidden"});
        });
    $("#mainNav li li:has(li)").addClass("hasSubNav");
  }                                                                                               
  
  function subNavMenu() {
    if(typeof(sPage) != "undefined" && sPage != ''){
      $("#subNav a").each(function() {
          if ($(this).attr("href").toLowerCase() == sPage.toLowerCase()) {
            $(this).addClass("active");  
          }
      });
    }
    
    /*Close all sub-nav menus*/                               
    $("#subNav li:has(li)").each(function() {
        $(this).addClass("hasMenuClosed");
    });
    
    // Add icon
    $("#subNav li li:has(li)").each(function() {
    $(this).prepend('<img src="/assets/img/gui/subNavPlus.gif" />');
    });
    
    /*Add click event to img icons in sub-nav*/
    $("#subNav li li img").click(function() {
        if($(this).siblings('ul').css('display')=='none') {
          $(this).attr({src: "/assets/img/gui/subNavMinus.gif"});
          $(this).siblings('ul').show(400);
        } else {
          $(this).attr({src: "/assets/img/gui/subNavPlus.gif"});
          $(this).siblings('ul').hide(400);
        }
    });
    
    /* Show child menus if available in sub-nav*/
    $("#subNav .active").addClass("hasMenuOpen");
    $("#subNav .active").siblings("img").attr({src: "/assets/img/gui/subNavMinus.gif"});
    $("#subNav .active").siblings('ul').show();
    
    /* Open parent nodes if available in sub-nav*/
    $("#subNav .active").parents("ul").siblings("a").addClass("hasMenuOpen");
    $("#subNav .active").parents("ul").siblings("img").attr({src: "/assets/img/gui/subNavMinus.gif"});
    $("#subNav .active").parents("ul").show();
    
    /*Set single pages in sub-nav*/
    $("#subNav li li").not(":has(ul)").prepend('<img src="/assets/img/gui/subNavPage.gif" />');
  }
  
  $(document).ready(function(){					
    mainmenu();
    subNavMenu();
  });