var g_id = 0;
    
 
    function addLoadEvent(func)
    {
      var oldonload = window.onload;
      if (typeof window.onload != 'function')
      {
         window.onload = func; 
      }
      else
      {
 
        window.onload = function()
        {
          if (oldonload)
          {
            oldonload();
          }
          func();
        }
      }
    }
    
  
    addLoadEvent(BgTimeChange);
    
     
   
    
    function ChangeBg()
    {        
           if (g_id == 0)       
           {
                ShowNight();
             
           }
           else
           {
                ShowDay();
           }

		$("#Main").fadeIn(1500);
    }
    
    function Anime()
    {
           		$("#Main").fadeOut(1500);
           		setTimeout("ChangeBg()",1500);
    }     
function show_ico(arg)
{
	document.getElementById("sw"+arg).style.display = "block";
}
function hide_ico(arg)
{
	document.getElementById("sw"+arg).style.display = "none";
}

function BgTimeChange()
{
    var curDate = new Date(); 
	var h = curDate.getHours();	

	if (h >= 18 || h < 6)
	{	   
        ShowNight();	 
	}
	else
	{	    
	    ShowDay();	   
	}
}