// Global variables 
var menuNames = new Array();
var timerID = null; 
var timerOn = false; 
var timecount = 400; 
var what = null; 
var newbrowser = true; 
var check = false;

// Functions
function init() 
{  
	if (document.layers) 
	{  
		layerRef="document.layers";  
		styleSwitch="";  
		visibleVar="show";  
		screenSize = window.innerWidth;  
		what ="ns4";  
	}  
	else if(document.all) 
	{  
		layerRef="document.all";  
		styleSwitch=".style";  
		visibleVar="visible";  
		screenSize = document.body.clientWidth + 18;  
		what ="ie4";  
	}  
	else if(document.getElementById) 
	{  
		layerRef="document.getElementByID";  
		styleSwitch=".style";  
		visibleVar="visible";  
		what="dom1";  
	}  
	else 
	{  
		what="none";
		newbrowser = false;
	} 
	
	check = true; 
} 

function showLayer(layerName) 
{  
	if(check) 
	{  
		if (what =="none") 
		{  
			return;  
		}  
		else if (what == "dom1") 
		{  
			document.getElementById(layerName).style.visibility="visible";  
		}  
		else 
		{  
			eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="visible"');
			 
			if (document.getElementById){
				if (document.getElementById(layerName).style.top == ""){
					document.getElementById(layerName).style.top = Number(document.getElementById(layerName + "").offsetTop - 5) + "px";
				}
			}
			
			/*
			var bottomDiv = new Number();
			bottomDiv = Number(document.getElementById(layerName).offsetHeight) + Number(document.getElementById(layerName + "").offsetTop - 19);

			if (bottomDiv > document.body.clientHeight){
				alert(bottomDiv + " " + document.body.clientHeight + " " + document.getElementById(layerName).offsetTop);
				var newHeight = new Number();
				
				newHeight = Number(document.getElementById(layerName).style.top.replace("px", "")) - Number(document.getElementById(layerName).offsetHeight) + 22;
				document.getElementById(layerName).style.top = newHeight + "px"; 
			}
			*/
			
			/*
			if (document.getElementById(layerName).offsetTop > document.body.clientHeight + ){
				var newHeight = new Number();
				
				newHeight = Number(document.getElementById(layerName).style.top.replace("px", "")) - Number(document.getElementById(layerName).offsetHeight) + 22;
				document.getElementById(layerName).style.top = newHeight + "px"; 
				
			}
			*/
		}
	}
	else
	{
		return;
	}  
} 

function hideLayer(layerName)
{
	if(check)
	{
		if (what =="none")
		{
			return;
		}
		else if (what == "dom1") 
		{  
			document.getElementById(layerName).style.visibility="hidden";
		}  
		else 
		{  
			eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="hidden"');  
		}  
	}  
	else 
	{  
		return;  
	}  
} 
 
function hideAll()
{
	for (var i = 0; i < menuNames.length; i++){
		hideLayer(menuNames[i]);  
	}
}

function startTime() 
{  
	if (timerOn == false) 
	{  
		timerID=setTimeout( "hideAll()" , timecount);  
		timerOn = true;  
	}  
} 

function stopTime() 
{  
	if (timerOn) 
	{  
		clearTimeout(timerID);  
		timerID = null;  
		timerOn = false;  
	}  
}

function onLoad() 
{  
	init();  
}