/* 动态级联城市 */
function getState(){
   var id=document.getElementById("br").value;
   city.getCity(id,setReion);
}
function setReion(data){
  if(data.length>0){
    DWRUtil.removeAllOptions("sr");
    DWRUtil.addOptions("sr",[{regionName:'所有城市',id:''}],"id","regionName");
    DWRUtil.addOptions("sr",data,"id","regionName");
  }else{
     DWRUtil.removeAllOptions("sr"); 
     DWRUtil.addOptions("sr",[{regionName:'暂无城市可选',id:''}],"id","regionName");
  }     
}