// JavaScript Document
window.onload = initAll;
function initAll() {
	var allLinks = document.getElementsByTagName("a");
	
	
	for (var i=0;i<allLinks.length; i++) {
		
		if (allLinks[i].className.indexOf("vooruitkijken") > -1) {// als er eem classname bestaat  met vooruitkijken
		//dan allen uitvoeren. Andere links met rust laten. Betreffende link class="vooruitkijken" bijvoegen.
				
			allLinks[i].onmouseover = showPreview;
		}
		else if (allLinks[i].className.indexOf("menuLink") > -1) {
			allLinks[i].onclick = retFalse;	
			allLinks[i].onmouseover = toggleMenu;
			 
		}
	}
}

function toggleMenu() {
	var startMenu = this.href.lastIndexOf("/")+1;
	var stopMenu = this.href.lastIndexOf(".");
	var thisMenuName = this.href.substring(startMenu,stopMenu);
	
	document.getElementById(thisMenuName).style.display = "block";
	
	this.parentNode.className = thisMenuName;
	this.parentNode.onmouseout = toggleDivOff;
	this.parentNode.onmouseover = toggleDivon;
}

function toggleDivon() {
	document.getElementById(this.className).style.display = "block";	
}

function toggleDivOff() {
	document.getElementById(this.className).style.display = "none";	
}

function retFalse() {
	return false;	
}

function showPreview(evt) {
	
	if (evt) {
		var url = evt.target;
	}
	else {
		evt = window.event;
		var url = evt.srcElement;
	}
	xPos = evt.clientX;
	yPos = evt.clientY;
	
	if (window.XMLHttpRequest) {
		xhr = new XMLHttpRequest();
	}
	else {
		if (window.ActiveXObject) {
			try {
				xhr = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e) { }
		}
	}

	if (xhr) {
		xhr.onreadystatechange = showContents;
		xhr.open("GET", url, true); //geen ankers gebruiken
		xhr.send(null);
	}
	else {
		alert("Sorry, but I couldn't create an XMLHttpRequest");
	}
	return false;
}

function showContents() {
	if (xhr.readyState == 4) {
		if (xhr.status == 200) {
			var outMsg = xhr.responseText;
		}
		else {
			var outMsg = "There was a problem with the request " + xhr.status;
		}

		var prevWin = document.getElementById("previewWin");
		prevWin.innerHTML = outMsg;
		prevWin.style.top = parseInt(yPos)+2 + "px";
		prevWin.style.left = parseInt(xPos)+2 + "px";
		prevWin.style.visibility = "visible";
		prevWin.onmouseout = function() {
			document.getElementById("previewWin").style.visibility = "hidden";
		}
	}
}