nPrevID=0;
prevObj=null;

mnu10 = new Image();	mnu10.src = "img/btwie_off.jpg";
mnu11 = new Image();	mnu11.src = "img/btwie_on.jpg";
mnu20 = new Image();	mnu20.src = "img/btdienst_off.jpg";
mnu21 = new Image();	mnu21.src = "img/btdienst_on.jpg";
mnu30 = new Image();	mnu30.src = "img/bthand_off.jpg";
mnu31 = new Image();	mnu31.src = "img/bthand_on.jpg";
mnu40 = new Image();	mnu40.src = "img/btref_off.jpg";
mnu41 = new Image();	mnu41.src = "img/btref_on.jpg";
mnu50 = new Image();	mnu50.src = "img/bthome_nieuws_off.jpg";
mnu51 = new Image();	mnu51.src = "img/btnieuws_on.jpg";
mnu60 = new Image();	mnu60.src = "img/btwerk_home_off.jpg";
mnu61 = new Image();	mnu61.src = "img/btwerk_on.jpg";
mnu70 = new Image();	mnu70.src = "img/btcont_home_off.jpg";
mnu71 = new Image();	mnu71.src = "img/btcont_home_on.jpg";

function fnSetMnuBtnOn(nID) {
	if (nPrevID != 0 && nPrevID != nID) {
		var obj = eval("document.getElementById('mnuImg" + nPrevID + "')");
		var subMnuObj = eval("document.getElementById('subMnu" + nPrevID + "')");
		subMnuObj.style.visibility = 'hidden';
		//obj.src = eval("mnu" + nPrevID + "0.src");
	}
	//var obj = eval("document.getElementById('mnuImg" + nID + "')");
	//obj.src = eval("mnu" + nID + "1.src");
	prevObj = eval("document.getElementById('mnuImg" + nPrevID + "')");
}

function fnSetMnuBtnOff(nID) {
	var obj = eval("document.getElementById('mnuImg" + nID + "')");
	obj.src = prevObj.src;
	//obj.src = eval("mnu" + nID + "0.src");
}

function fnSetMnuOn(nID) {
	try { clearTimeout(oTimer);}
	
	catch (ex) { }
	  
	if (nPrevID != 0 && nPrevID != nID) {
		var obj = eval("document.getElementById('mnuImg" + nPrevID + "')");
		var subMnuObj = eval("document.getElementById('subMnu" + nPrevID + "')");
		subMnuObj.style.visibility = 'hidden';
		//if (obj.src != eval("mnu" + nPrevID + "1.src"))
		//	obj.src = eval("mnu" + nPrevID + "0.src");
		if (prevObj != null)
			obj.src = prevObj.src;
	}
	var obj = eval("document.getElementById('mnuImg" + nID + "')");
	var subMnuObj = eval("document.getElementById('subMnu" + nID + "')");
	subMnuObj.style.left = fnFindLeftPos(obj);
	subMnuObj.style.visibility = 'visible';
	//obj.src = eval("mnu" + nID + "1.src");
	nPrevID = nID;
	prevObj = eval("document.getElementById('mnuImg" + nPrevID + "')");
}
 
function fnSetMnuOff(nID) {
	oTimer = eval("setTimeout('fnSetMnuOffAfterPause("+nID+")', 500)");
}

function fnSetMnuOffAfterPause(nID) {
	var obj = eval("document.getElementById('mnuImg" + nID + "')");
	var subMnuObj = eval("document.getElementById('subMnu" + nID + "')");
	subMnuObj.style.left = fnFindLeftPos(obj);
	subMnuObj.style.visibility = 'hidden';
	//if (obj.src != eval("mnu" + nID + "1.src"))
	//	obj.src = eval("mnu" + nPrevID + "0.src"); 
	nPrevID = 0;
}

function fnFindLeftPos(obj) {
	var curleft = 0;
	var objName = obj.id;
	if (obj.offsetParent) {
		curleft = obj.offsetLeft
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft
		}
	}
	if (objName == 'mnuImg1') {
		return [curleft-34];

	} else if (objName == 'mnuImg2') {
		return [curleft-22];
	
	} else if (objName == 'mnuImg3') {
		return [curleft-13];
	
	} else if (objName == 'mnuImg4') {
		return [curleft-38];
	  
	} else if (objName == 'mnuImg5') {
		return [curleft-23];	  

	} else if (objName == 'mnuImg6') {
		return [curleft-15];

	} else if (objName == 'mnuImg7') {
	  	return [curleft-16];
	}
}