var DHTML = (document.getElementById || document.all || document.layers);
var nav_btns = new Array('menu_welkom','menu_biografie','menu_archief','menu_boeken','menu_wandelingen', 'menu_links', 'menu_info', 'menu_agenda');

var nav_01 = new Array();
var nav_02 = new Array();
var visual = new Array();
var currentItem=99;
var arrowno=99;

if (document.images){
	arrow = new Image();
	arrow.src="gfx/arrow.gif";
	nix = new Image();
	nix.src="gfx/nix.gif";
	
	visual[0] = new Image();
	visual[0].src="gfx/visual_home2.jpg";
	visual[1] = new Image();
	visual[1].src="gfx/visual_biografie.jpg";
	visual[2] = new Image();
	visual[2].src="gfx/visual_nieuws2.jpg";
	visual[3] = new Image();
	visual[3].src="gfx/visual_boeken2.jpg";
	visual[4] = new Image();
	visual[4].src="gfx/visual_wandelingen2.jpg";
	visual[5] = new Image();
	visual[5].src="gfx/visual_home.jpg";
	visual[6] = new Image();
	visual[6].src="gfx/visual_home.jpg";
	visual[7] = new Image();
	visual[7].src="gfx/visual_agenda.jpg";

	for (j=0;j<nav_btns.length;j++){
		nav_01[j] = new Image();
		nav_01[j].src = "gfx/" + nav_btns[j] + ".gif"
		nav_02[j] = new Image();
		nav_02[j].src = "gfx/" + nav_btns[j] + "_mo.gif";
	}
}
function over(no){
	if(no!=currentItem){
		if (document.images){
			document.images[nav_btns[no]].src = nav_02[no].src;
		}
	}
}
function out(no){
	if(no!=currentItem){
		if (document.images){
			document.images[nav_btns[no]].src = nav_01[no].src;
		}
	}
}

function set(no){
	if(no!=currentItem){
		if (document.images){
			document.images[nav_btns[no]].src = nav_02[no].src;
			if(currentItem!=99){
				document.images[nav_btns[currentItem]].src = nav_01[currentItem].src;
				arrowno="arrow"+currentItem;
				document.images[arrowno].src=nix.src;
			}	
			arrowno="arrow"+no;
			document.images[arrowno].src=arrow.src;
			currentItem=no;
			document.images['visual'].src = visual[no].src;
		}
	}
}