sel_city = {
  tcitys: new Array(2),
  provinceobj: function()
  {
    return document.getElementById('province');
  },
  tcityobj: function()
  {
    return document.getElementById('city');
  },
  tcityary: function(strprovince, strcity)
  {
    this.province = strprovince;
    this.tcity = strcity;
  },
  tinit: function(strprovince, strcity)
  {
    this.tcitys[0]= new this.tcityary('亚洲$:$3', '|北京$:$14|上海$:$15|香港$:$206|新加坡$:$210|曼谷$:$211|吉隆坡$:$212|东京$:$213|台湾$:$214');
    this.tcitys[1]= new this.tcityary('北美洲$:$100', '|纽约$:$149|旧金山$:$150|洛杉矶$:$151|华盛顿$:$152|拉斯维加斯$:$153');
    with(this.provinceobj())
    {
      tselIndex = 0;
      innerHTML = null;
      tlength = this.tcitys.length;
      for (ti = 0; ti < tlength; ti ++)
      {
        provinceAry = this.tcitys[ti].province.split('$:$');
        if (provinceAry[1] == strprovince) tselIndex = ti;
        options[ti] = new Option(provinceAry[0], provinceAry[1]);
      }
      options.selectedIndex = tselIndex;
    }
    with(this.tcityobj())
    {
      innerHTML = null;
      tcitylist = (this.tcitys[tselIndex].tcity).split('|');
      tlength = tcitylist.length;
      for (ti = 0; ti < tlength; ti ++)
      {
        tcitylistAry = tcitylist[ti].split('$:$');
        if (tcitylistAry[1] == strcity) tselIndex = ti;
        options[ti] = new Option(tcitylistAry[0], tcitylistAry[1]);
      }
      options.selectedIndex = tselIndex;
    }
  },
  tloadcity: function(strprovince)
  {
    for (ti = 0; ti < this.tcitys.length; ti ++)
    {
      provinceAry = this.tcitys[ti].province.split('$:$');
      if (strprovince == provinceAry[1])
      {
        with(this.tcityobj())
        {
          innerHTML = null;
          tcitylist = (this.tcitys[ti].tcity).split('|');
          tlength = tcitylist.length;
          for (tk = 0; tk < tlength; tk ++)
          {
            tcitylistAry = tcitylist[tk].split('$:$');
            options[tk] = new Option(tcitylistAry[0], tcitylistAry[1]);
          }
        }
        break;
      }
    }
  },
  tselect: function()
  {
    with(this.provinceobj()) {tselectedprovince = options[selectedIndex].value;}
    this.tloadcity(tselectedprovince);
  }
}