v=0;
prev=0;
openMenu =0;
q = '_images/nav/Nav-01.gif';
function ChangeClass( id, prev){
    Divid = "subText" + id;
    Nieuwsid = "Nieuws" + id; 
 
    document.getElementById(Divid).className='contentText';
    document.getElementById(Nieuwsid).className='contentItemHover'; 
    
    if(prev != 0 && prev != id){
         prevDivid = "subText" + prev;
         prevNieuwsid = "Nieuws" + prev; 
         document.getElementById(prevDivid).className = 'HiddencontentText';
         document.getElementById(prevNieuwsid).className = 'contentItem';            
    }
    return id; 
}


function doMenu( menu, prev ) {
		
    obj = document.getElementById(menu);
		
		if(prev != 0 && prev != menu){
			pre = document.getElementById(prev);
			pre.style.visibility = "hidden";
			pre.style.display = "none";
		}
    obj.style.visibility = "visible";
    obj.style.display = "inline";
		
		return menu;
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {

	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		Nav_01_down = newImage("_images/Nav-01-down.gif");
		Nav_01_over = newImage("_images/Nav-01-over.gif");
		Nav_02_over = newImage("_images/Nav-02-over.gif");
		Nav_02_down = newImage("_images/Nav-02-down.gif");
		Nav_03_over = newImage("_images/Nav-03-over.gif");
		Nav_03_down = newImage("_images/Nav-03-down.gif");
		Nav_04_over = newImage("_images/Nav-04-over.gif");
		Nav_04_down = newImage("_images/Nav-04-down.gif");
		Nav_05_over = newImage("_images/Nav-05-over.gif");
		Nav_05_down = newImage("_images/Nav-05-down.gif");
		preloadFlag = true;
	}
}