function submenus($submenus) {
	for(var $i = 0; $i < $submenus.length; $i ++) {
		$submenu = document.getElementById("submenu_" + $submenus[$i]);
		$menusub = document.getElementById("menusub_" + $submenus[$i]);
		$submenu.submenu = $menusub.submenu = $submenu;
		$submenu.menusub = $menusub.menusub = $menusub;
		$submenu.onmouseover = $menusub.onmouseover = showSubmenu;
		$submenu.onmouseout = $menusub.onmouseout = hideSubmenu;
	}
}

function showSubmenu() {
	this.submenu.style.display = "block";
	document.addClass(this.menusub, "active");
}

function hideSubmenu() {
	this.submenu.style.display = "none";
	document.removeClass(this.menusub, "active");
}