function unpack(name) 
   {
      menu = document.getElementById('s' + name) ? 1 : 0;
	  
	  if (menu)
         {
            document.getElementById('s' + name).style.display = 'block';
            document.getElementById(name).className = 'sub_' + name;
		 }
   }

function pack(name) 
   {
      menu = document.getElementById('s' + name) ? 1 : 0;
	  
      if (menu)
         {
            document.getElementById('s' + name).style.display = 'none';
            document.getElementById(name).className = 'sub_' + name + '_normal';
		 }
   }