nPrevID=0;
currImg=0;

function fnSetMnuBtnOn(nID) {
	if (nPrevID != 0 && nPrevID != nID) {
		var obj = eval("document.getElementById('mnuLnk" + nPrevID + "')");
		var subMnuObj = eval("document.getElementById('subMnu" + nPrevID + "')");
		subMnuObj.style.display = 'none';
		if(currImg.toString() != nPrevID.toString()) {
			//obj.src = eval("mnu" + nPrevID + "0.src");
			obj.className = 'navtextOn';
		}
	}
	var obj = eval("document.getElementById('mnuLnk" + nID + "')");
	//obj.src = eval("mnu" + nID + "1.src");
	obj.className = 'navtextOn';
}

function fnSetMnuBtnOff(nID) {
	if (currImg.toString() != nID.toString()) {
		var obj = eval("document.getElementById('mnuLnk" + nID + "')");
		//obj.src = eval("mnu" + nPrevID + "0.src");
		obj.className = 'navtext';
	}
}

function fnSetMnuOn(nID) {
	try { clearTimeout(oTimer); }
	catch (ex) { }
	if (nPrevID != 0 && nPrevID != nID) {
		var obj = eval("document.getElementById('mnuLnk" + nPrevID + "')");
		var subMnuObj = eval("document.getElementById('subMnu" + nPrevID + "')");
		subMnuObj.style.display = 'none';
		if(currImg.toString() != nPrevID.toString()) {
			//obj.src = eval("mnu" + nPrevID + "0.src");
			obj.className = 'navtext';
		}
	}
	var obj = eval("document.getElementById('mnuLnk" + nID + "')");
	var subMnuObj = eval("document.getElementById('subMnu" + nID + "')");
	subMnuObj.style.left = (fnFindLeftPosMenu(obj)-10) + "px";
	subMnuObj.style.display = 'block';
	//obj.src = eval("mnu" + nID + "1.src");
	obj.className = 'navtextOn';
	nPrevID = nID;
}
 
function fnSetMnuOff(nID) {
	oTimer = eval("setTimeout('fnSetMnuOffAfterPause("+nID+")', 500)");
}

function fnSetMnuOffAfterPause(nID) {
	var obj = eval("document.getElementById('mnuLnk" + nID + "')");
	var subMnuObj = eval("document.getElementById('subMnu" + nID + "')");
	subMnuObj.style.left = fnFindLeftPosMenu(obj) + "px";
	subMnuObj.style.display = 'none';
	if (currImg.toString() != nID.toString()) { 
		//obj.src = eval("mnu" + nID + "0.src"); 
		obj.className = 'navtext';
	}
	nPrevID = 0;
}

function fnFindLeftPosMenu(obj) {
	var curleft = 0;
	var objName = obj.id;
	if (obj.offsetParent) {
		curleft = obj.offsetLeft
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft
		}
	}
	return curleft;
}

//script for enlargement
function fnHideLarge() {
	document.getElementById("imgEnlarge").src = "img/white.gif";
	var divObj = document.getElementById("divEnlarge");
	divObj.style.display = 'none';
	currImgEnl = 0;
}

function fnFindLeftPos(obj) {
	var curleft = 0;
	if (obj.offsetParent) {
		curleft = obj.offsetLeft
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft
		}
	}
	return [curleft];
}
function fnFindTopPos(obj) {
	var curtop = 0;
	if (obj.offsetParent) {
		curtop = obj.offsetTop
		while (obj = obj.offsetParent) {
			curtop += obj.offsetTop
		}
	}
	return [curtop];
}

function fnEnlarge(sImage) {
	var	W = 500;
	var H = 500;
	var L = (screen.width - W) / 2;
	var T = (screen.height - H) / 2;
	day = new Date();
	id = day.getTime();
	sImage = sImage.replace("/staand/","/large/").replace("/liggend/","/large/").replace("/referentie/","/large/");
	var sRef = "enlarge.asp?img=" + sImage;
	eval("page" + id + " = window.open(sRef, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width='+W+',height='+H+',left ='+L+',top ='+T+'');");
}

function fnShowPopUp(ID) {
	if(currImg!=0) {
		var src = document.getElementById('imgEnlarge').src;
		src = src.replace('normal', 'large');
		fnEnlarge(src);
	}
}

function Search() {
		document.getElementById("searchform").submit();
}