function getRandomPic() {		
		var nmbr = 5;
		index = Math.floor(Math.random()*nmbr);
		imagecss = 'hdr' + (index+1);
		
		for(var i=0; i<nmbr; i++) {
			var tmp = newImage('../images/'+imagecss+'.gif');
		}
		
		return imagecss;
	}
	
	function newImage(arg) {
		if (document.images) {
			rslt = new Image();
			rslt.src = arg;
			return rslt;
		}
	}

	function changeImages() {
		if (document.images && (preloadFlag == true)) {
			for (var i=0; i<changeImages.arguments.length; i+=2) {
				document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
			}
		}
	}

	var preloadFlag = false;
	function preloadImages() {		
		if (document.images) {
			tmp = newImage("../images/leaf_dark.gif");
			tmp = newImage('../images/icon_top_over.gif');
			tmp = newImage('../images/menu_over.gif');
			tmp = newImage('../images/submenu_over.gif');
			var hdrpath = '../images/'+getRandomPic()+'.gif';
			
		    if (document.getElementById)
		        var returnValue = document.getElementById("hdr");
		    else if (document.all)
		        var returnValue = document.all["hdr"];
		    else if (document.layers)
		        var returnValue = document.layers["hdr"];
				
			returnValue.style.backgroundImage = 'url('+hdrpath+')';
			preloadFlag = true;
		}
		
		chooseLanguage();
		var hash = document.location.hash.substr(1,document.location. hash.length);
		window.scroll(0,200+document.getElementsByName(hash)[0].offsetTop);
		
	}
	
	function createCookie(name,value) {
		var date = new Date();
		date.setTime(date.getTime()+(365*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
		document.cookie = name+"="+value+expires+"; path=/";
		window.location.href = unescape(window.location.pathname);
	}

	function readCookie(name) {
		var nameEQ = name + "=";
		var ca = document.cookie.split(';');
		for(var i=0;i < ca.length;i++) {
			var c = ca[i];
			while (c.charAt(0)==' ') c = c.substring(1,c.length);
			if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
		}
		return null;
	}

	function clearCookie(name) {
		createCookie(name,"",-1);
	}
	
	function chooseLanguage() {
		var lang = readCookie('lang');
		if(lang!=null && lang!='undefined')
			showHide(lang);
		else
			showHide('en');
	}
	
	function showHide(div) {
		if(div == "en" || div == "fr" || div == "nl" || div == "de") {
			if(document.getElementById('lang_nl') == null) div = "en";
			else {
				if(div == "fr" || div == "nl" || div == "de") { document.getElementById('lang_en').style.display = "none"; }
				if(div == "en" || div == "nl" || div == "de") { document.getElementById('lang_fr').style.display = "none"; }
				if(div == "fr" || div == "en" || div == "de") { document.getElementById('lang_nl').style.display = "none"; }
				if(div == "fr" || div == "nl" || div == "en") { document.getElementById('lang_de').style.display = "none"; }
			}
			document.getElementById('lang_'+div).style.display = "block";
		}
		
		var minheight = 85;
		var height = document.getElementById('fullcontent').offsetHeight;
		if(height > minheight)
			glide(height-minheight, minheight);
	}

	function hideURL() {
		window.status = "";
	}
	
	y=0; angle=0;	
	function glide(height, minheight){
		angle = angle + (Math.PI/50);
		y = Math.round(height*Math.sin(angle));
		document.getElementById('fullcontent').style.height = (minheight+y) + "px";

		if (angle<Math.PI/2) setTimeout("glide(" + height + "," + minheight + ")",20);
		else {
			angle=0; //reset the angle
		}

	}