var tracking_number = 0;

var close_which_menu = "";

function showSUB( submenuname )
  { 
	if ( tracking_number != 0 )
	  { 
		clearTimeout(tracking_number);
		
		tracking_number = 0;
		
		if ( close_which_menu == submenuname )
		  { 
			close_which_menu = "";
			
			return;
		  }
		else 
		  really_hide();
	  }
	  
	var menu = document.getElementById(submenuname);
	
	if ( menu ) 
	
	  menu.style.display='block'
  }
  
function hideSUB( submenuname )  
  { 
	close_which_menu = submenuname;
	
	tracking_number = setTimeout("really_hide()",200);
  }
  
function really_hide()
  { 
	if ( close_which_menu != "" )
	  { 
		var menu = document.getElementById(close_which_menu);
		
		if ( menu ) 
		  
		  menu.style.display='none'
	  }
	
	close_which_menu = "";
	
	tracking_number = 0;
  }