function populate(o) {
  d=document.getElementById('PlanType');
  if(!d){return;}                 
  var mitems=new Array();
 mitems['No preferences']=[''];
  mitems['Calida Village']=['C1'];
  mitems['Carmen Village']=['C1'];
  mitems['Esmeralda Village']=['B1','C3','TH2'];
  mitems['Estella Village']=['C2','C3','TH1'];
  mitems['Novelia Village']=['C1'];
  mitems['Olivia Village']=['C1','TH2','TH2-End'];
  mitems['Al Mahra']=['12'];
  mitems['Alvorada']=['C2','B2'];
  mitems['Hattan']=['E1'];
mitems['La Collection II']=['12'];
mitems['Palmera']=['B','C'];
mitems['Saheel']=['9'];
mitems['Terranova']=['10','17'];

								  
  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];
  }
}