var timeID;

function hide_menu()
{
	document.all.menu1.style.visibility='hidden';
	document.all.menu2.style.visibility='hidden';
	document.all.menu3.style.visibility='hidden';
	document.all.menu4.style.visibility='hidden';
	document.all.menu6.style.visibility='hidden';
	document.all.menu10.style.visibility='hidden';


	document.all.menu_arrow.style.visibility = 'hidden'; 
}

function show_menu(menu, arrow_position, menu_position)
{
	hide_menu();

	menu.style.left = menu_position;
	menu.style.visibility = 'visible';

	document.all.menu_arrow.style.left = arrow_position;
	document.all.menu_arrow.style.visibility = 'visible'; 

	clearTimeout(timeID);
}


//sub_301_2_1.php 의 monocot의 스크립트
function do_url( target_url )
{
	var win;
	
	win = window.open( target_url, 'tdna_scr', 'width=740, height=480, toolbar=no, location=no, directories=no, status=no, menubar=no, resizable=no, scrollbars=yes, copyhistory=no');
	if (win.focus)
	   win.focus();
}