function showHide(ida) 
 { 
     if ( document.getElementById(ida).style.display == 'block' ) 
         document.getElementById(ida).style.display = 'none'; 
     else 
         document.getElementById(ida).style.display = 'block'; 
 } 

var id_menu = new Array('sub_menu_1','sub_menu_2','sub_menu_3','sub_menu_4','sub_menu_5','sub_menu_6','sub_menu_7','sub_menu_8','sub_menu_9');
 
function allclose() {
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"; 
}
}