// JavaScript Document

function setupNav(){
	var menuOpen = false;
	
	function menuOver(){
		var thisMenu = document.getElementById("sub_" + this.id.split("t_")[1]);
		if (menuOpen == true){
			document.getElementById("menu_open").getElementsByTagName("ul")[0].className = "hidden";
			document.getElementById("menu_open").id = "";
		}
		thisMenu.style.visibility = "visible";
		thisMenu.parentNode.getElementsByTagName("p")[0].id = "menu_open";
		menuOpen = true;
	}
	
	function menuOut(){
		var thisMenu = document.getElementById("sub_" + this.id.split("t_")[1]);
		thisMenu.style.visibility = "hidden";
		menuOpen = false;
		document.getElementById("menu_open").parentNode.getElementsByTagName("ul")[0].className = "hidden";
		document.getElementById("menu_open").id = "";
	}
	
	var menuToggle = document.getElementById("top_nav").getElementsByTagName("p");
	
	for (var i = 0; i < menuToggle.length; i++){
		menuToggle[i].parentNode.id = "t_" + i;
		menuToggle[i].parentNode.onmouseover = menuOver;
		menuToggle[i].parentNode.onmouseout = menuOut;
		var subMenu = menuToggle[i].parentNode.getElementsByTagName("ul")[0];
		subMenu.id = "sub_" + i;
		var subOptions = subMenu.getElementsByTagName("li");
		for (var x = 0; x < subOptions.length; x++){
			subOptions[x].id = "sub_" + i + "_" + x;
		}
	}
}