function addToCard(id_artikel, card_omschrijving){
	var file_name = document.location.href;
	var end = (file_name.indexOf("?") == -1) ? file_name.length : file_name.indexOf("?");
	document.location = file_name.substring(file_name.lastIndexOf("/")+1, end)+"?qAddArtnr="+id_artikel+"&qOmschr="+card_omschrijving;
}