function SearchSubmitCheck(pClientId, cClientId, bdateClientID, edateClientID){

      var ProvinceListObj = document.getElementById(pClientId);
      var cityListObj = document.getElementById(cClientId); 
      var pid = ProvinceListObj.options[ProvinceListObj.selectedIndex].value;
      if (pid=="0" || pid==""){
         alert("请选择省份!");return false;
      }
     
      var cid = cityListObj.options[cityListObj.selectedIndex].value;
      //if (cid == "" || cid=="0"){
      //   alert("请选择城市!");return false;
      //}
      var bd = document.getElementById(bdateClientID).value;
      if (bd == ""){
         alert("请输入入住日期!");return false;
      }
      var ld = document.getElementById(edateClientID).value;
      if (ld == ""){
         alert("请输入离店日期!");return false;
      }
     
      if (compareDate(bd, ld) == false){
         alert("入住日期或离店日期输入错误!"); return false;
      }
      
      return true;
      
}

   //is dt2 > dt1
   function compareDate(dt1, dt2){
      try{ 
           var y1 = dt1.substr(0,4);
           var y2 = dt2.substr(0,4);
           if (y2 > y1) return true;
           var m1 = dt1.substr(5,2);
           var m2 = dt2.substr(5,2);
           if (m2 > m1) return true;
           var d1 = dt1.substr(8,2);
           var d2 = dt2.substr(8,2);
           if (d2 > d1) return true;
           return false;
         }catch(err)
         {return false;}
   }