var timer = 0;
var drop_down = "";
var drop_down_menus = new Array("bronze", "about", "videos");

function show_drop_down(menu) {
	clearTimeout(timer);

	drop_down = document.getElementById(menu + "_drop_down");

	drop_down.style.left = getMenuX(menu);
	drop_down.style.top = getMenuY(menu);

	// hide other drop down menus
	for (var i = 0; i < 3; i++) {
		if (drop_down_menus[i] != menu) {
			other_drop_down = document.getElementById(drop_down_menus[i] + "_drop_down");
			other_drop_down.style.visibility = "hidden";
		}
	}

	drop_down.style.visibility = 'visible';
}

function hide_drop_down(menu) {
	drop_down = document.getElementById(menu + "_drop_down");
	timer = setTimeout("drop_down.style.visibility = 'hidden';", 200);
}

function getMenuX(element_id){
	var xPos = document.getElementById(element_id).offsetLeft;
	var tempEl = document.getElementById(element_id).offsetParent;

	while (tempEl != null) {
		xPos += tempEl.offsetLeft;
		tempEl = tempEl.offsetParent;
	}

	if (element_id == "about") {
		xPos = xPos - 10;
	}
	else if (element_id == "bronze") {
		xPos = xPos - 10;
	}
	else if (element_id == "videos") {
		xPos = xPos - 3;
	}

	return xPos;
}

function getMenuY(element_id) {
	var header = document.getElementById("header");
	var navbar = document.getElementById("navbar");

	return header.offsetHeight + navbar.offsetHeight - 3;
}