function add(){
window.location.href='';
}
function refreshDistrict(province,city,district){
window.location.href=Dyhb.U('district/index'+
'?province='+province+'&city='+city+'&district='+district+
'&pid='+$('#province').val()+'&cid='+$('#city').val()+"&did="+$('#district').val());
}