//do browser detect stuff 

var isNS = (navigator.appName == "Netscape"); 
var isMacIE = ( (navigator.userAgent.indexOf("IE 4") > -1) && (navigator.userAgent.indexOf("Mac") > -1) ); 
var layerRef = (isNS) ? "document" : "document.all"; var styleRef = (isNS) ? "" : ".style"; 
var isDynamic = ( (document.layers || document.all) && !isMacIE ); 
var activeMenu = 0; 
var finalClip; 

function activateMenu(menuLayerRef, offset) 
{ 
	if (isDynamic && activeMenu != menuLayerRef) 
	{ 
		if (activeMenu) hideMenu("menu" + activeMenu); 
		menuID = "menu" + menuLayerRef; 		
		activeMenu = menuLayerRef; 
		if (isNS) 
		{ 
			document[menuID].left = offset; 
		} 
		else 
		{ 
			document.all[menuID].style.pixelLeft = offset; 
		} 
		showMenu(menuID); 
	} 
	if (isDynamic && !isNS) window.event.cancelBubble = true; 
} 

function showMenu(layerID) 
{ 
	eval(layerRef + '["' + layerID + '"]' + styleRef + '.visibility = "visible"'); 
} 

function hideMenu(layerID) 
{ 
	eval(layerRef + '["' + layerID + '"]' + styleRef + '.visibility = "hidden"'); 
} 

function killMenu(e) 
{ 
	//check if theres a menu active 
	if (activeMenu) 
	{ 
		menuID = "menu" + activeMenu; 
		if (isNS) 
		{ 
			menuX1 = document[menuID].left; 
			menuX2 = menuX1 + document[menuID].clip.right; 
			menuY1 = document[menuID].top; 
			menuY2 = menuY1 + document[menuID].clip.bottom; 
			if (e.pageX < menuX1 || e.pageX > menuX2 || e.pageY > menuY2) 
			{ 
				hideMenu(menuID); 
				activeMenu = 0; 
			} 
		} 
		else 
		{ 
			hideMenu(menuID); 
			activeMenu = 0; 
		} 
	} 
} 

function init() 
{ 
	if (isDynamic) 
	{ 
		if (isNS) 
		{ 
			document.captureEvents(Event.MOUSEMOVE); 
			document.onmousemove = killMenu; 
		} 
		else 
		{ 
			document.onmouseover = killMenu; 
		} 
	} 
}