var BUTTON_CLASS = "btn";
var BUTTON_PRESSED_CLASS = "btnPressed";
var BUTTON_PRESSED_MOUSEOVER_CLASS = "btnPressedOver";
var BUTTON_MOUSEOVER_CLASS = "btnMouseOver";

var pressedButtonId = "";

function buttonMouseOver(oButton)
{
	if (oButton.className != BUTTON_MOUSEOVER_CLASS)
	{
		if (oButton.className == BUTTON_PRESSED_CLASS)
			oButton.className = BUTTON_PRESSED_MOUSEOVER_CLASS;
		else
			oButton.className = BUTTON_MOUSEOVER_CLASS;
	}
}

function buttonMouseOut(oButton)
{
	if (pressedButtonId == oButton.id)
		oButton.className = BUTTON_PRESSED_CLASS;
	else
		oButton.className = BUTTON_CLASS;
}

function buttonMouseDown(oButton)
{
	if (pressedButtonId != "")
		document.all[pressedButtonId].className = BUTTON_CLASS;

	pressedButtonId = oButton.id;
	oButton.className = BUTTON_PRESSED_MOUSEOVER_CLASS;
}

function goPage(pageURL)
{
	parent.content.location.href = pageURL;
}

function updateNavbar(pageURL)
{
//    if (parent.navbar.location.href.indexOf(pageURL) == -1)
        parent.navbar.location.href = pageURL;
}