$(document).ready(function() {
    $("#brends").change(function(){
        var val = $('#brends').val();
        
        var curlocation = window.location.href ;

        if (val >=1 && val <=6) {
            var brand = val;
            var subbrand = false;
            
            window.location = curlocation;/*+'/filter/'+brand;*/
        }
        else {
            var brand = val.substr(0, 1);
            var subbrand = val.substr(2);
            window.location = curlocation/*+'/filter/'+brand+'/'+subbrand*/;
        }
              
    });
});