function toon(provincie) {
      document.getElementById('provincie').src = '/images/nederland-' + provincie + '.gif';
   }

   function activate(provincie, option) {

   	document.getElementById('detailweergave').src = '/images/' + provincie + '.gif';
   	jah('/onderlingen.php?provincie=' + provincie + '&option=' + option, 'navpd');
   }

   function hide() {
      document.getElementById('provincie').src = '/images/nederland.gif';
   }

   if (document.images){
	   pic1= new Image(215,170);
	   pic1.src="/images/nederland-gelderland.gif";

	   pic2= new Image(215,170);
	   pic2.src="/images/nederland-limburg.gif";

	   pic3= new Image(215,170);
	   pic3.src="/images/nederland-zeeland.gif";

	   pic4= new Image(215,170);
	   pic4.src="/images/nederland-noordbrabant.gif";

	   pic5= new Image(215,170);
	   pic5.src="/images/nederland-groningen.gif";

	   pic6= new Image(215,170);
	   pic6.src="/images/nederland-zuidholland.gif";

	   pic7= new Image(215,170);
	   pic7.src="/images/nederland-utrecht.gif";

	   pic8= new Image(215,170);
	   pic8.src="/images/nederland-flevoland.gif";

	   pic9= new Image(215,170);
	   pic9.src="/images/nederland-friesland.gif";

	   pic10= new Image(215,170);
	   pic10.src="/images/nederland-overijssel.gif";

	   pic11= new Image(215,170);
	   pic11.src="/images/nederland-drenthe.gif";

	   pic12= new Image(215,170);
	   pic12.src="/images/nederland-noordholland.gif";
  	}

	function jah(url,target) {
		
	    // native XMLHttpRequest object
	    //document.getElementById(target).innerHTML = 'sending...';
	    if (window.XMLHttpRequest) {
	        req = new XMLHttpRequest();
	        req.onreadystatechange = function() {jahDone(target);};
	        req.open("GET", url, true);
	        req.send(null);
	    // IE/Windows ActiveX version
	    } else if (window.ActiveXObject) {
	        req = new ActiveXObject("Microsoft.XMLHTTP");
	        if (req) {
	            req.onreadystatechange = function() {jahDone(target);};
	            req.open("GET", url, true);
	            req.send();
	        }
	    }
	}

	function jahDone(target) {
	    // only if req is "loaded"
	    if (req.readyState == 4) {
	        // only if "OK"
	        if (req.status == 200) {
	            results = req.responseText;
	            document.getElementById(target).innerHTML = results;
	        } else {
	            document.getElementById(target).innerHTML="jah error:\n" +
	                req.statusText;
	        }
	    }
	}