// JavaScript Document
var ns4 = (document.layers);
var ie4 = (document.all && !document.getElementById);
var ie5 = (document.all && document.getElementById);
var ns6 = (!document.all && document.getElementById);

function switch_submenu(id, all_menus){
	show_submenu(id)

	for($index=0; $index<all_menus.length; $index++)
		{
			if(all_menus[$index]==id)
				{
					show_submenu(all_menus[$index]);
				}
			else
				{
					hide_submenu(all_menus[$index]);
				}
		}
}
function show_submenu(id){
	
	// Netscape 4
	if(ns4){
		document.layers[id].visibility = "show";
		document.layers[id].display = "block";
	}
	// Explorer 4
	else if(ie4){
		document.all[id].style.visibility = "visible";
		document.all[id].style.display = "block";
	}
	// W3C - Explorer 5+ and Netscape 6+
	else/* if(ie5 || ns6)*/{
		document.getElementById(id).style.visibility = "visible";
		document.getElementById(id).style.display = "block";
	}
}

function hide_submenu(id){
	// Netscape 4
	if(ns4){
		document.layers[id].visibility = "hide";
		document.layers[id].display = "none";
	}
	// Explorer 4
	else if(ie4){
		document.all[id].style.visibility = "hidden";
		document.all[id].style.display = "none";
	}
	// W3C - Explorer 5+ and Netscape 6+
	else/* if(ie5 || ns6)*/{
		document.getElementById(id).style.visibility = "hidden";
		document.getElementById(id).style.display = "none";
	}
}