function ShowFolder(folderid,lang){
	var breedte = 900;
	var hoogte = 570;
	l = (screen.width-breedte)/2;
	t = (screen.height-hoogte)/2;
	url = "http://folders.webinabox.nl/folders/wiab262/" + folderid + "/?lang=" + lang;
	window.open( url, "folder", 'left='+l+',top='+t+',width='+breedte+',height='+hoogte+',resizable=NO,scrollbars=NO');
}