var curImageID = "title"; //defines initial selected button
var curmenuID = "blank"; //defines initial menu being displayed
var curpageID = "mygroup"; //defines initial page being displayed
var timeoutID = null; //defined timeout variable to start and stop setTimeout()



//array for all images 
if (document.images)
	{
	//load images for swapping
	var imageArray = new Array();
	imageArray["title1"] = new Image(171,20);
	imageArray["title2"] = new Image(171,20);

	//set images URLs
	imageArray["title1"].src = "images/NW65_title1.gif";
	imageArray["title2"].src = "images/NW65_title2.gif";
	}

function showhide(divID)
{
	var element;
	element = document.getElementById(divID);
	
    	if(element.style.display == "none")
  	{
		element.style.display = "block";
	}
	else
	{
		element.style.display = "none";
	} 
}

function navshowhide(divID, imageID)
{
	var element;
	element = document.getElementById(divID);
	
    	if(element.style.display == "none")
  	{
		element.style.display = "block";
		document.images[imageID].src = imageArray["minus"].src;
	}
	else
	{
		element.style.display = "none";
		document.images[imageID].src = imageArray["plus"].src;

	} 
}

function expandcollapse(divID, imageID)
{
	var element = document.getElementById(divID);
		
	if(element.style.display == "none")
	  	{
			element.style.display = "block";
			document.images[imageID].src = imageArray["minus"].src;
		}
	else
		{
			element.style.display = "none";
			document.images[imageID].src = imageArray["plus"].src;
		} 
}

function swapimage(imageID)
{
//	alert(curImageID);
	  	
    	if(curImageID != imageID)
	  	{
			document.images[curImageID].src = imageArray[curImageID + '1'].src;
			document.images[imageID].src = imageArray[imageID + '2'].src;
			curImageID = imageID;
		}
}

function show_hint(titleID, hintID)
	{
		var hintIDelement = document.getElementById(hintID);
		var titleIDelement = document.getElementById(titleID);
		hintIDelement.style.visibility = "visible";  
		titleIDelement.style.visibility = "visible";  
	}		
	
function hide_hint(titleID, hintID)
	{
		var hintIDelement = document.getElementById(hintID);
		var titleIDelement = document.getElementById(titleID);
		hintIDelement.style.visibility = "hidden";  
		titleIDelement.style.visibility = "hidden";  
	}