function popUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=600');");
}
/*function nocontextmenu()  // this function only applies to IE4, ignored otherwise.
{
 event.cancelBubble = true
 event.returnValue = false;
 return false;}
function norightclick(e) // This function is used by all others
{
 if (window.Event) // again, IE or NAV?
{
  if (e.which == 2 || e.which == 3)
  return false;}
 else
 if (event.button == 2 || event.button == 3)
  {
   event.cancelBubble = true
   event.returnValue = false;
  return false;}}
document.oncontextmenu = nocontextmenu;  // for IE5+
document.onmousedown = norightclick;  // for all others */

function goBack() {
	if (navigator.appName == "Netscape") {
		history.go(-1);
	}
	if (navigator.appName.indexOf('Microsoft')!= -1) {
		history.back();	
	}
}
var images1 = new Array();

images1[0] = "/images/biobg1.jpg"; 
images1[1] = "/images/biobg2.jpg";
images1[2] = "/images/biobg3.jpg";
images1[3] = "/images/biobg4.jpg";
images1[4] = "/images/biobg5.jpg";
images1[5] = "/images/biobg6.jpg";
images1[6] = "/images/biobg7.jpg";
images1[7] = "/images/biobg8.jpg";
images1[8] = "/images/biobg9.jpg";
images1[9] = "/images/biobg10.jpg";
images1[10] = "/images/biobg11.jpg";
images1[11] = "/images/biobg12.jpg";

function ShowImgTop() {
var number1 = images1.length;
var increment1 = Math.floor(Math.random() * number1);
var strTemp1 ='<img width="513" height="198" src="' + images1[increment1] + '" border="0" alt="De Bolster" class="jsim">';
document.write(strTemp1);
}
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) {
		biologische_zaden_10_over = newImage("/images/biologische_zaden_10-over.gif");
		biologische_zaden_11_over = newImage("/images/biologische_zaden_11-over.gif");
		biologische_zaden_12_over = newImage("/images/biologische_zaden_12-over.gif");
		biologische_zaden_13_over = newImage("/images/biologische_zaden_13-over.gif");
		biologische_zaden_14_over = newImage("/images/biologische_zaden_14-over.gif");
		biologische_zaden_15_over = newImage("/images/biologische_zaden_15-over.gif");
		biologische_zaden_16_over = newImage("/images/biologische_zaden_16-over.gif");
		biologische_zaden_17_over = newImage("/images/biologische_zaden_17-over.gif");
		biologische_zaden_18_over = newImage("/images/biologische_zaden_18-over.gif");
		biologische_zaden_19_over = newImage("/images/biologische_zaden_19-over.gif");
		biologische_zaden_20_over = newImage("/images/biologische_zaden_20-over.gif");
		biologische_zaden_21_over = newImage("/images/biologische_zaden_21-over.gif");
		preloadFlag = true;
	}
}