var g_openMenu = null;
var g_timer;
var g_area1Previous = "part1_1",g_area2Previous = "part2_1";

function $id(id){
	return document.getElementById(id);
}

function showMenu(childId){
	if (g_openMenu != null && g_openMenu != childId)
	{
		clearTimeout(g_timer);
		$id(g_openMenu).style.display = "none";
		g_openMenu = null;
	}
	if (g_openMenu == childId)
	{
		clearTimeout(g_timer);
	}
	$id(childId).style.display = "block";
	g_openMenu = childId;
}

function hideMenu(childId){
	g_timer = setTimeout(function(){hideNow(childId)},1);
}

function hideNow(childId){
	$id(childId).style.display = "none";
	g_openMenu = null;
}

function chgTab(areaNumber,tabNumber){
	if (areaNumber == "area1")
	{
		$id(g_area1Previous).className = "product_tab_unselect";
		$id(g_area1Previous+"_content").className = "product_unselect";
		$id(tabNumber).className = "product_tab_select";
		$id(tabNumber+"_content").className = "product_select";
		g_area1Previous = tabNumber;
	}
	else
	{
		$id(g_area2Previous).className = "indi_tab_unselect";
		$id(g_area2Previous+"_content").className = "blog_unselect";
		$id(tabNumber).className = "indi_tab_select";
		$id(tabNumber+"_content").className = "blog_select";
		g_area2Previous = tabNumber;
	}
}