function changeCategoryRegion() {
	var filterForm = window.document.filterForm;
	var searchParams = '';
	
	if (filterForm.CategoryID.options[filterForm.CategoryID.selectedIndex].value != '') {
		var searchParams = '&CategoryID=' + filterForm.CategoryID.options[filterForm.CategoryID.selectedIndex].value + '&CategoryName=' + encodeURIComponent(filterForm.CategoryID.options[filterForm.CategoryID.selectedIndex].text);
	}
	if (filterForm.RegionID.options[filterForm.RegionID.selectedIndex].value != '') {
		var searchParams = searchParams + '&RegionID=' + filterForm.RegionID.options[filterForm.RegionID.selectedIndex].value + '&RegionName=' + encodeURIComponent(filterForm.RegionID.options[filterForm.RegionID.selectedIndex].text);
	}
	if (searchParams != '') {
		window.location.href='/index.cfm?controller=browse&action=list_suppliers' + searchParams;
	} else {
		window.location.href='/index.cfm';
	}
}