function checkvariant() {
	var xmlhttp;
	
	var gruppe	= document.getElementById('gruppe').firstChild.nodeValue;
	var farve	= (document.getElementById('variant_farve'))? document.getElementById('variant_farve').value : false;
	var size	= (document.getElementById('variant_size'))? document.getElementById('variant_size').value : false;
	
	if (farve == false && size == false)	produkt(document.getElementById('variant_id').value);
	else if (farve == false)				produkt(document.getElementById('variant_size').value);
	else if (size == false)					produkt(document.getElementById('variant_farve').value);
	
	return false
}

function produkt(id) {
	var xmlhttp;
	
	if (window.XMLHttpRequest) {
		xmlhttp = new XMLHttpRequest();
	}
	else if (window.ActiveXObject) {
		xmlhttp = new ActiveXObject('Microsoft.XMLHTTP');
	}
	
	xmlhttp.open('GET','/_feed/produkt.php?id=' + id,true);
	
	xmlhttp.onreadystatechange = function() {
		if (xmlhttp.readyState == 4) {
			var result	= xmlhttp.responseText;
			var json	= eval('(' + result + ')');
			
			location.href = '/' + document.getElementById('systemlang').firstChild.nodeValue + '-' + document.getElementById('systemcur').firstChild.nodeValue + '/webshop/' + json['kategoriurl'] + '/' + id + '/' + json['url'] + '.htm';
		}
	}
	
	xmlhttp.send(null);
}