$(document).ready(function() {       
    $("#menu").find(".item").hover(function(){ 
        $("#menu").find(".item").find("ul").css('display','none');
        $("#menu").find(".itemlink").css('background-position','0 0px');      
        $(this).find(".itemlink").css('background-position','0 -30px');
        $(this).find("ul").css('display', 'block');            
        }
        ,function(){ 
          $("#menu").find(".item").find("ul").css('display','none');
          $("#menu").find(".itemlink").css('background-position','0 0px');
          var bodyid = $('body').attr('class');
          switch(bodyid){ 
            case 'home': $("#menu-home").css('background-position','0 -30px'); break;
            case 'overview': $("#menu-overview").css('background-position','0 -30px'); break;
            case 'products': $("#menu2a").css('display','block');$("#menu-products").css('background-position','0 -30px'); break;
            case 'samples': $("#menu2b").css('display','block');$("#menu-samples").css('background-position','0 -30px'); break;
            case 'clients': $("#menu2c").css('display','block');$("#menu-clients").css('background-position','0 -30px'); break;
            case 'news': $("#menu-news").css('background-position','0 -30px'); break;
            case 'gallery': $("#menu2d").css('display','block');$("#menu-gallery").css('background-position','0 -30px'); break;
            case 'technical': $("#menu2e").css('display','block');$("#menu-technical").css('background-position','0 -30px'); break;             
            case 'contact': $("#menu-contact").css('background-position','0 -30px'); break;                           
            default :
                break; 
          } 
         }
    );
   
    setTimeout(function()
        { 
            //$.preloadMenu("images/temp-home2-back.jpg","images/temp-home-back.jpg");
        },6000);
    //home background       
    var randomImages = ['home-background1.jpg','home-background2.jpg','home-background3.jpg','home-background4.jpg','home-background5.jpg'];
    var rndNum = Math.floor(Math.random() * randomImages.length);
    $("#element7home").css({ background: "url(/images/" + randomImages[rndNum] + ") 0 91px no-repeat" });
           
});