var xcol_cur_menu = null;
var xcol_cur_submenu = null;

function show(id)
{
    if (!isDOMcompliant()) { return; }
    var menu = document.getElementById("Menu" + id);
    var menus = document.getElementById("menu");
    var submenu = menus.getElementsByTagName("ul").item(id);
    if (xcol_cur_submenu == null) {
        submenu.style.visibility = "visible";
    } else {
        xcol_cur_submenu.style.visibility = "hidden";
        submenu.style.visibility = "visible";
    }
    if (xcol_cur_menu == null) {
        menu.style.backgroundColor = "#ECB660";
        menu.style.color = "#000";
    } else {
        xcol_cur_menu.style.backgroundColor = "#F6DDB6";
        xcol_cur_menu.style.color = "#000";
        menu.style.backgroundColor = "#ECB660";
        menu.style.color = "#000";
    }
    xcol_cur_menu = menu;
    xcol_cur_submenu = submenu;
}

function hide()
{
	if (!isDOMcompliant()) { return; }
	if (xcol_cur_submenu == null) {} else {
        xcol_cur_submenu.style.visibility = "hidden";
    }
	if (xcol_cur_menu == null) {}	
	else {
		xcol_cur_menu.style.backgroundColor = "#F6DDB6";
        xcol_cur_menu.style.color = "#000";
	}
	xcol_cur_menu = null;
	xcol_cur_submenu = null;
}

function isDOMcompliant()
{
    return document.getElementById && document.getElementsByTagName;
}

function prettify(id)
{
	if (!isDOMcompliant()) { return; }	
	var thumb = document.getElementById("thumb" + id);
    thumb.style.border = "1px solid #fff";
}
function deprettify(id)
{
	if (!isDOMcompliant()) { return; }	
	var thumb = document.getElementById("thumb" + id);
    thumb.style.border = "1px solid #000";
}