function setOptions(chosen) {
  var selbox = document.addlisting.region;

  selbox.options.length = 0;
  if (chosen == " ") {
    selbox.options[selbox.options.length] = new Option(' ',' ');
  }

  if (chosen == "ACT") {
    selbox.options[selbox.options.length] = new Option(' ',' ');
    selbox.options[selbox.options.length] = new Option('Canberra & Surrounds','Canberra & Surrounds');
  }

  if (chosen == "NSW") {
    selbox.options[selbox.options.length] = new Option(' ',' ');
    selbox.options[selbox.options.length] = new Option('Blue Mountains','Blue Mountains');
    selbox.options[selbox.options.length] = new Option('Capital Country','Capital Country');
    selbox.options[selbox.options.length] = new Option('Central Coast & Hawkesbury','Central Coast & Hawkesbury');
    selbox.options[selbox.options.length] = new Option('Central West','Central West');
    selbox.options[selbox.options.length] = new Option('Mid North Coast','Mid North Coast');
    selbox.options[selbox.options.length] = new Option('Hunter Valley & Coast','Hunter Valley & Coast');
    selbox.options[selbox.options.length] = new Option('Illawarra','Illawarra');
    selbox.options[selbox.options.length] = new Option('New England','New England');
    selbox.options[selbox.options.length] = new Option('North Coast','North Coast');
    selbox.options[selbox.options.length] = new Option('North West','North West');
    selbox.options[selbox.options.length] = new Option('Snowy Mountains','Snowy Mountains');
    selbox.options[selbox.options.length] = new Option('Southern Highlands','Southern Highlands');
    selbox.options[selbox.options.length] = new Option('Sydney','Sydney');
    selbox.options[selbox.options.length] = new Option('The Murray','The Murray');
    selbox.options[selbox.options.length] = new Option('The Outback','The Outback');
    selbox.options[selbox.options.length] = new Option('The Riverina','The Riverina');
    selbox.options[selbox.options.length] = new Option('The South Coast','The South Coast');
  }

  if (chosen == "NT") {
    selbox.options[selbox.options.length] = new Option(' ',' ');
    selbox.options[selbox.options.length] = new Option('Darwin Region','Darwin Region');
    selbox.options[selbox.options.length] = new Option('The Red Centre','The Red Centre');
  }

  if (chosen == "QLD") {
    selbox.options[selbox.options.length] = new Option(' ',' ');
    selbox.options[selbox.options.length] = new Option('Around Brisbane & Hinterland','Around Brisbane & Hinterland');
    selbox.options[selbox.options.length] = new Option('Brisbane','Brisbane');
    selbox.options[selbox.options.length] = new Option('Brisbane Islands','Brisbane Islands');
    selbox.options[selbox.options.length] = new Option('Capricorn','Capricorn');
    selbox.options[selbox.options.length] = new Option('Darling Downs','Darling Downs');
    selbox.options[selbox.options.length] = new Option('Fraser Island & Coast','Fraser Island & Coast');
    selbox.options[selbox.options.length] = new Option('Gold Coast & Hinterland','Gold Coast & Hinterland');
    selbox.options[selbox.options.length] = new Option('Great Barrier Reef','Great Barrier Reef');
    selbox.options[selbox.options.length] = new Option('Outback & Gulf Country','Outback & Gulf Country');
    selbox.options[selbox.options.length] = new Option('Sunshine Coast & Hinterland','Sunshine Coast & Hinterland');
    selbox.options[selbox.options.length] = new Option('Tropical North','Tropical North');
  }

  if (chosen == "SA") {
    selbox.options[selbox.options.length] = new Option(' ',' ');
    selbox.options[selbox.options.length] = new Option('Adelaide','Adelaide');
    selbox.options[selbox.options.length] = new Option('Adelaide Hills','Adelaide Hills');
    selbox.options[selbox.options.length] = new Option('Barossa Valley','Barossa Valley');
    selbox.options[selbox.options.length] = new Option('Clare Valley & Mid North','Clare Valley & Mid North');
    selbox.options[selbox.options.length] = new Option('Eyre Peninsula & Nullarbor','Eyre Peninsula & Nullarbor');
    selbox.options[selbox.options.length] = new Option('Fleurieu Peninsula','Fleurieu Peninsula');
    selbox.options[selbox.options.length] = new Option('Flinders Ranges & Outback','Flinders Ranges & Outback');
    selbox.options[selbox.options.length] = new Option('Kangaroo Island','Kangaroo Island');
    selbox.options[selbox.options.length] = new Option('Murray Region','Murray Region');
    selbox.options[selbox.options.length] = new Option('The South-East','The South-East');
    selbox.options[selbox.options.length] = new Option('Yorke Peninsula','Yorke Peninsula');
  }

  if (chosen == "TAS") {
    selbox.options[selbox.options.length] = new Option(' ',' ');
    selbox.options[selbox.options.length] = new Option('Bass Strait Islands','Bass Strait Islands');
    selbox.options[selbox.options.length] = new Option('Hobart','Hobart');
    selbox.options[selbox.options.length] = new Option('Launceston','Launceston');
    selbox.options[selbox.options.length] = new Option('The East Coast','The East Coast');
    selbox.options[selbox.options.length] = new Option('The Midlands','THe Midlands');
    selbox.options[selbox.options.length] = new Option('The North West','The North West');
    selbox.options[selbox.options.length] = new Option('The South East','The South East');
    selbox.options[selbox.options.length] = new Option('The South West','The South West');
  }

  if (chosen == "VIC") {
    selbox.options[selbox.options.length] = new Option(' ',' ');
    selbox.options[selbox.options.length] = new Option('Bays & Peninsulas','Bays & Peninsulas');
    selbox.options[selbox.options.length] = new Option('East Gippsland','East Gippsland');
    selbox.options[selbox.options.length] = new Option('Goldfields','Goldfields');
    selbox.options[selbox.options.length] = new Option('Goulburn & Murray','Goulburn & Murray');
    selbox.options[selbox.options.length] = new Option('Grampians & Central West','Grampians & Central West');
    selbox.options[selbox.options.length] = new Option('Mallee Country','Mallee Country');
    selbox.options[selbox.options.length] = new Option('Melbourne','Melbourne');
    selbox.options[selbox.options.length] = new Option('Phillip Island & Gippsland','Phillip Island & Gippsland');
    selbox.options[selbox.options.length] = new Option('South West Coast','South West Coast');
    selbox.options[selbox.options.length] = new Option('Spa & Garden Country','Spa & Garden Country');
    selbox.options[selbox.options.length] = new Option('The Legends','The Legends');
    selbox.options[selbox.options.length] = new Option('Yarra Valley & Dandenong Ranges','Yarra Valley & Dandenong Ranges');
  }

  if (chosen == "WA") {
    selbox.options[selbox.options.length] = new Option(' ',' ');
    selbox.options[selbox.options.length] = new Option('Darling Range & Swan Valley','Darling Range & Swan Valley');
    selbox.options[selbox.options.length] = new Option('Esperance & Nullarbor','Esperance & Nullarbor');
    selbox.options[selbox.options.length] = new Option('Great Southern','Great Southern');
    selbox.options[selbox.options.length] = new Option('Outback Coast & Mid West','Outback Coast & Mid West');
    selbox.options[selbox.options.length] = new Option('Perth','Perth');
    selbox.options[selbox.options.length] = new Option('Rottnest Island','Rottnest Island');
    selbox.options[selbox.options.length] = new Option('The Goldfields','The Goldfields');
    selbox.options[selbox.options.length] = new Option('The Heartlands','The Heartlands');
    selbox.options[selbox.options.length] = new Option('The Kimberley','The Kimberley');
    selbox.options[selbox.options.length] = new Option('The Pilbara','The Pilbara');
    selbox.options[selbox.options.length] = new Option('The South West','The South West');
  }
}