var id_menu = new Array('sub_menu_1','sub_menu_2','sub_menu_3','sub_menu_4','sub_menu_5','sub_menu_6'); 

function allclose() 
	{ 
	for (i=0; i < id_menu.length; i++)
		{ 
		document.getElementById(id_menu[i]).style.display = "none"; 
		}
	} 

function allclose_1() 
	{ 
	for (i=0; i < id_menu.length; i++)
		{ 
		document.getElementById(id_menu[i]).style.display = "none"; 
		}
	
	} 

function openMenu(id)
{ for (i=0; i < id_menu.length; i++){ if (id != id_menu[i]){ 	document.getElementById(id_menu[i]).style.display = "none"; } } if (document.getElementById(id).style.display == "block"){ document.getElementById(id).style.display = "none"; }else{ document.getElementById(id).style.display = "block"; } }