// JavaScript Document

function ShowMenu(id) {
	HideMenus();
	var element;
	var menu;
	element = document.getElementById(id);
	element.className = 'header_active';
	menu = document.getElementById(id+'_menu');
	menu.style.visibility='visible';	
}

function HideMenus() {
	var element;
	var menu;
	for (var i=1; i<=5; i++) {
		element = document.getElementById('header'+i);
		element.className = 'header';
		menu = document.getElementById('header'+i+'_menu');
		menu.style.visibility='hidden';	
	}
}