<!--
function Browser() {
	this.name = navigator.appName;
	if (this.name == "Netscape") this.name = "nn";
	else if (this.name == "Microsoft Internet Explorer") this.name = "ie";
	this.version = parseFloat(navigator.appVersion);

	this.ie = (this.name == "ie");
	this.nn = (this.name == "nn");
	this.ie4 = (navigator.userAgent.indexOf('MSIE 4')>0);
	this.ie5 = (navigator.userAgent.indexOf('MSIE 5')>0);
	this.nn4 = ((this.name == "nn") && (this.version >= 4.08) && (this.version < 5));
	this.nn6 = ((this.name == "nn") && (this.version >= 5));
	this.mac = (navigator.appVersion.indexOf("Macintosh") > 0);
	this.win = (navigator.appVersion.indexOf("Win") > 0);
	this.ie5mac = (this.ie5 && this.mac);
}

var browser = new Browser();

function popupwindow(el, wndname, type) {
	
  switch (type) {
		case 'klein' : 
			var breedte = 350;
			var hoogte = 500;
			var title = "klein";
			break;
		case 'middel' :
			var breedte = 640;
			var hoogte = 890;
			var title = "middel";
			break;
		case 'groot' :
			var breedte = 728;
			var hoogte = 520;
			var title = "groot";
			break;
	}

	var wt = 20;
	var wl = 20;

	return window.open(el, wndname, "top=" + wt + ",left=" + wl + ",scrollbars=yes,width=" + breedte + ",height=" + hoogte);

}
//-->