function Preisfilter(Formular)
{
    var Element = Formular.filterid.selectedIndex;
	var url = window.location.pathname;
	
	if (url.search(/page\/(.*)\//) != -1) {
		url = url.replace(/page\/([0-9]+)\//, '');
	}
	
	if (url.search(/filter\/(.*)\//) != -1) {
		if (Element == 0) {
			url = url.replace(/filter\/([0-9]+)\//, '');
			location = url;
		} else {
			url = url.replace(/filter\/([0-9]+)\//, 'filter/' + Element + '/');
			location = url;
		}
	} else {
		location = url + 'filter/' + Element + '/';
	}
}