function load(pagina,zoek_id) {

    switch(pagina) {
        case 'zoekgroot':
            url = "/index.php?action=zoekgroot";
            break;
        
        case 'zoekklein':
            url = "/index.php?action=zoekklein&zoek_id="+zoek_id;
            break;

        default:
            url = "/leeg.html";
            break;
    }
    
    // deze functie wordt aangeroepen door http.get wanneer de aanvraag gelukt is
    // response bevat het antwoord va de php (response.responseText of response.responseXML)
    function onComplete(response) {
        document.getElementById('zoekbox').innerHTML = response.responseText;
    }
    // de pagina ophalen en de onComplete functie aanroepen als het gelukt is
    http.get(url, onComplete);
    
    // de links stoppen indien nodig
    return false;
}

/**********************************************************

			    Copyright 2006 Andreas Creten


			Filename: HTTP.js
			Discription: HTTPObjectRequest script
***********************************************************/
http = new Object();

http._xmlobjects = [
	function() { return new XMLHttpRequest(); },
	function() { return new ActiveXObject("Msxml2.XMLHTTP"); },
	function() { return new ActiveXObject("Microsoft.XMLHTTP"); }
];

http._xmlobject = null;

http.newRequest = function() {
	if(http._xmlobject != null) return http._xmlobject();
	
	for(var i = 0; i < http._xmlobjects.length; i++) {
		try {
			var xmlobject = http._xmlobjects[i];
			var request = xmlobject();
			if (request != null) {
				http._xmlobject = xmlobject;
				return request;
			}
		}
		catch(e) {
			continue;
		}
	}
	
	http._xmlobject = function() {
		throw new Error("XMLHttpRequest not supported");
	}
	
	http._xmlobject();
}

http.handleReadyState = function(readyState) {
		switch(readyState)
		{
			case 0:
				// nog niet geïnitialiseerd en verbonden
				http.readyState0();
				break;
				
			case 1:
				// Bezig met laden
				http.readyState1();
				break;
				
			case 2:
				// Geladen
				http.readyState2();
				break;
				
			case 3:
				// Interactief
				http.readyState3();
				break;
		
			case 4:
				// Volledig geladen
				http.readyState4();
				break;
		}
}

http.handleHTTPStatus = function(status) {
		switch(status) {
			case 200:
				// OK
				http.status200();
				break;
				
			case 400:
				// Bad Request
				http.status400();
				break;
				
			case 401:
				// Unauthorized
				http.status401();
				break;
				
			case 403:
				// Forbidden
				http.status403();
				break;
		
			case 404:
				// Not Found
				http.status404();
				break;
			
			case 500:
				// Internal Server Error
				http.status500();
				break;
		}
}

http.get = function(url, handleResponse) {

	var request = null;
	var request = http.newRequest();

	request.onreadystatechange = function() {
/*		http.handleReadyState(request.readyState);
		http.handleHTTPStatus(request.status);
		*/
		if(request.readyState == 4) {
				if(handleResponse)
					handleResponse(request);
				else http.handleResponse(request);
			
		}
	}

	request.open("GET", url);
	request.send(null);
	
	return request;
}

http.post = function(url, handleResponse, t_parameters){

	var parameters = "";
	var parameter_count = null;
	var request = null;
	var request = http.newRequest();

	request.onreadystatechange = function() {
		http.handleReadyState(request.readyState);
		http.handleHTTPStatus(request.status);

		if(request.readyState == 4) {
			if(request.status == 200) {
				if(handleResponse)
					handleResponse(request);
				else http.handleResponse(request);
			}
		}
	}
	
	for(parameter in t_parameters) {
		parameter_count++;
		if(parameter_count != 1) parameters += "&";
		parameters += parameter+"="+t_parameters[parameter];
	}

	request.open("POST", url, true);
	
	request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	request.setRequestHeader("Content-length", parameters.length);
	request.setRequestHeader("Connection", "close");

	request.send(parameters);
	
	return request;
}

// functies die aangemaakt kunnen worden voor een preloader ofzo
http.readyState0 = function(){};
http.readyState1 = function(){};
http.readyState2 = function(){};
http.readyState3 = function(){};
http.readyState4 = function(){};

//
http.status200 = function(){}; // OK
http.status400 = function(){}; // Bad Request
http.status401 = function(){}; // Unauthorized
http.status403 = function(){}; // Forbidden
http.status404 = function(){}; // Not Found
http.status500 = function(){}; // Internal Server Error
//
// krijgt als invoer het request object
http.handleResponse = function(request){ error.set('handleResponse function not set!'); };

var offsetfrommouse=[15,15]; //image x,y offsets from cursor position in pixels. Enter 0,0 for no offset
var displayduration=1; //duration in seconds image should remain visible. 0 for always.
var currentimageheight = 450;	// maximum image size.
var t_id = 0;
var currentimagewidth = 430;	// maximum image size.
var timer;

var pos=0;
var dir=2;
var len=0;

function getSize() {
	var myWidth = 0, myHeight = 0;
	if( typeof( window.innerWidth ) == 'number' ) {
		myWidth = window.innerWidth; myHeight = window.innerHeight;
	} else if( document.documentElement && ( document.documentElement.clientWidth ||document.documentElement.clientHeight ) ) {
		myWidth = document.documentElement.clientWidth; myHeight = document.documentElement.clientHeight;
	} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
		myWidth = document.body.clientWidth; myHeight = document.body.clientHeight;
	}
	return [myWidth,myHeight];
}
function getScrollXY() {
	var scrOfX = 0, scrOfY = 0;
	if( typeof( window.pageYOffset ) == 'number' ) {
		scrOfY = window.pageYOffset; scrOfX = window.pageXOffset;
	} else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
		scrOfY = document.body.scrollTop; scrOfX = document.body.scrollLeft;
	} else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
		scrOfY = document.documentElement.scrollTop; scrOfX = document.documentElement.scrollLeft;
	}
	return[scrOfX,scrOfY];
}

function gettrailobj(){
if (document.getElementById)
return document.getElementById("h_l_div").style
else if (document.all)
return document.all.trailimagid.style
}

function gettrailobjnostyle(){
if (document.getElementById)
return document.getElementById("h_l_div")
else if (document.all)
return document.all.trailimagid
}


function truebody(){
return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}


function hidetrail(){	
	gettrailobj().display= "none";
	document.onmousemove=""
	gettrailobj().left="-500px"
	clearTimeout(timer);
}

function showtrail(imagename,title,showthumb){
	i = imagename
	t = title
	s = showthumb
	timer = setTimeout("show('"+i+"',t,s);",200);
}
function show(imagename,title,showthumb){
	
	document.onmousemove=followmouse;
	t_id = setInterval(animate,20);
	
	newHTML = '<div class="border_preview"><div id="loader_container"><img src="http://www.zign.nl/images/ajax-loader.gif" width="32" height="32" border="0" alt=""></div>';
	if (showthumb > 0){
    newHTML = newHTML + '<div align="center" style="padding: 10px;"><img onload="javascript:remove_loading();" src="' + imagename + '" border="0"></div>';

	newHTML = newHTML + '</div>';
	framewidth = currentimagewidth+20;
	//if ((navigator.userAgent.indexOf("Firefox")==-1) && (navigator.userAgent.indexOf("Opera")==-1) ) {	newHTML = newHTML+'<iframe src="about:blank" scrolling="no" frameborder="0" width="'+framewidth+'" height="'+currentimageheight+'"></iframe>';}
	if ((navigator.userAgent.indexOf("Firefox")==-1) && (navigator.userAgent.indexOf("Opera")==-1) ) {	newHTML = newHTML+'<iframe src="about:blank" scrolling="no" frameborder="0" width="'+framewidth+'" height="300"></iframe>';}

	var obj_id = gettrailobjnostyle()
	obj_id.innerHTML = newHTML;

	gettrailobj().display="block";

}

function followmouse(e){

	var xcoord=offsetfrommouse[0]
	var ycoord=offsetfrommouse[1]

	var windowWidth = getSize()[0];
	var windowHeight = getSize()[1];
	var windowScrollX = getScrollXY()[0];
	var windowScrollY = getScrollXY()[1];
	
	var browserSpecOffset = 0;
	
	ycoord = windowScrollY+(windowHeight-currentimageheight) / 2;
	
	if ((typeof e != "undefined") && (navigator.userAgent.indexOf("Opera")==-1)) {
		xcoord += e.pageX;
		browserSpecOffset = 50;
	}
	
	if ((typeof window.event != "undefined") && (navigator.userAgent.indexOf("Opera")==-1)){
		xcoord += event.clientX;
		browserSpecOffset = 30;
	}
	
	if (navigator.userAgent.indexOf("Opera")!=-1) {
		xcoord += window.event.clientX;
		browserSpecOffset = 50;
	}
	
	if (xcoord+currentimagewidth+browserSpecOffset>windowWidth) {
		e = e || window.event;
		if (e.pageX || e.pageY) {
			xcoord = e.pageX-currentimagewidth-30;
    		} else {
			xcoord = e.clientX-currentimagewidth-30;
		}
	}
	if (xcoord<0) {
		xcoord += browserSpecOffset+offsetfrommouse[0];
	}

	gettrailobj().left = xcoord+"px";
	gettrailobj().top = ycoord+"px";
}
}

function animate()
{
	var elem = document.getElementById('progress');
	if(elem != null) {
		if (pos==0) len += dir;
		if (len>32 || pos>79) pos += dir;
		if (pos>79) len -= dir;
		if (pos>79 && len==0) pos=0;
		elem.style.left = pos;
		elem.style.width = len;
	}
	
}

function remove_loading() {
	this.clearInterval(t_id);
	var targelem = document.getElementById('loader_container');
	targelem.style.display='none';
	targelem.style.visibility='hidden';
	//var t_id = setInterval(animate,60);
}

//menu
var ids=new Array('mn1','mn2','mn3','mn4');

function switchid(id){	
	hideallids();
	showdiv(id);
}

function hideallids(){
	//loop through the array and hide each element by id
	for (var i=0;i<ids.length;i++){
		hidediv(ids[i]);
	}		  
}

function hidediv(id) {
	//safe function to hide an element with a specified id
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'none';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'none';
		}
		else { // IE 4
			document.all.id.style.display = 'none';
		}
	}
}

function showdiv(id) {
	//safe function to show an element with a specified id
		  
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'block';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'block';
		}
		else { // IE 4
			document.all.id.style.display = 'block';
		}
	}
}