/* header sub menu */
timerID = 0;
var subnum = new Array();

document.onclick = hideAllSubMenu;

function setElement() {
	for (var i = 0; i < 7; i++) {
		subnum[i] = document.getElementById("submenu" + i );
	}
}

function showSubMenu(index) {
	hideAllSubMenu();
	subnum[index].style.visibility = "visible";
	clearTimeout(timerID);
}

function hideAllSubMenu() {
	for (var i = 0; i < 7; i++) {
		subnum[i].style.visibility = "hidden";
	}
}

function setTimer() {
	timerID = setTimeout("hideAllSubMenu()",10000)
}