function addCityList(province,city,hasUnLimit,hasDefault)
{
    var i;
    clearCityList(city,hasDefault);
    if(province.value!="")
    {
        for(i=0;i<arrcity.length;i++)
        {
            if(!hasUnLimit && arrcity[i].itemid >= 1000)
                continue;
            
            if(arrcity[i].classid == parseInt(province.value))
            {
                city[city.length] = new Option(arrcity[i].itemname,arrcity[i].itemid);
            }
        }
    }
}

function getProvinceID(cityID) {
    for (var i = 0; i < arrcity.length; i++) {
        if (arrcity[i].itemid == cityID) {
            return arrcity[i].classid;
        }
    }

    return 0;
}

function clearCityList(city,hasDefault)
{
    var n;
    if(hasDefault)
    { n = 1; }
    else
    { n = 0; }
    
    for(;city.length>n;)
    {
        city.options[city.length-1]=null;
    }
}