function switchMenu(curr_id, total_num, sname) { 
//debugger;
resetMenuPic();
 for(var i=0; i<total_num; i++)     {         
     var el = document.getElementById('menu_sub_'+i);  
     
     var DataText0 = "旅行社精選推介";
     var DataText1 = "旅行社精選旅行團";
     var DataText2 = "旅行社精選自遊行";
     var DataText3 = "旅行社精選郵輪";    
     
     if(!el) return;      
     
     var img = document.getElementById('menu_master_'+i); 
	 
	 if(i == curr_id) {
          el.style.display = "block";
          
         switch(curr_id)
         {
            case 0:
               img.src = "App_Themes/Default/images/index_67_1.jpg";
               document.getElementById("rootValue").innerText = DataText0; 
            break;
            case 1:
                img.src = "App_Themes/Default/images/index_69_1.jpg";
                document.getElementById("rootValue").innerText = DataText1; 
            break;
            case 2:
             img.src = "App_Themes/Default/images/index_71_1.jpg";
             document.getElementById("rootValue").innerText = DataText2; 
            break;
            case 3:
             img.src = "App_Themes/Default/images/index_73_1.jpg";
             document.getElementById("rootValue").innerText = DataText3; 
            break;
            default:
                img.src = "App_Themes/Default/images/index_67_1.jpg";                 
        }
          
//		  if(sname == "a"){
//             img.src = "images/hotmenu_"+(i+1)+"a.jpg"; 
//			 break;
//		  }else if(sname == "b"){
//			 img.src = "images/tour_cate"+(i+1)+"a.jpg"; 
//			 break;
//		  }
		  
      } else{            
          el.style.display = "none";
          
          
//		  if(sname == "a"){
//             img.src = "images/hotmenu"+(i+1)+".jpg";
//			 break;
//		  }else if(sname == "b"){
//			 img.src = "images/tour_cate"+(i+1)+".jpg";
//			 break;
//		  }
     } 
  } 
} 

function resetMenuPic()
{
     var img0 = document.getElementById('menu_master_0'); 
     var img1 = document.getElementById('menu_master_1'); 
     var img2 = document.getElementById('menu_master_2'); 
     var img3 = document.getElementById('menu_master_3');
     
     
     img0.src = "App_Themes/Default/images/index_67.jpg";
     img1.src = "App_Themes/Default/images/index_69.jpg";
     img2.src = "App_Themes/Default/images/index_71.jpg";
     img3.src = "App_Themes/Default/images/index_73.jpg";
}