function populate(o) {
  d=document.getElementById('loc');
  if(!d){return;}                 
  var mitems=new Array();
  mitems['Choose']=[''];
  mitems['New South Wales']=[' ','Eastern Suburbs','Inner West','Lower Northern Suburbs','Northern Beaches','Northern Western Suburbs','Outer Western Suburbs','Sydney Centre'];
  mitems['Victoria']=[' ','Melbourne','Hawthorn'];
  mitems['Queensland']=[' ','Brisbane','Cairns','Gold Coast'];
  mitems['Western Australia']=[' ','Perth'];
  d.options.length=0;
  cur=mitems[o.options[o.selectedIndex].value];
  if(!cur){return;}
  d.options.length=cur.length;
  for(var i=0;i<cur.length;i++) {
    d.options[i].text=cur[i];
    d.options[i].value=cur[i];
  }
}