function createWijkDropdown(selectbox){
addOption(selectbox,"Bouwlust/Vrederust");
addOption(selectbox,"Centrum");
addOption(selectbox,"Laakkwartier en Spoorwijk");
addOption(selectbox,"Leyenburg");
addOption(selectbox,"Loosduinen");
addOption(selectbox,"Mariahoeve en Marlot");
addOption(selectbox,"Morgenstond");
addOption(selectbox,"Scheveningen");
addOption(selectbox,"Stationsbuurt");
addOption(selectbox,"Transvaalkwartier");
addOption(selectbox,"Vruchtenbuurt");
addOption(selectbox,"Waldeck");
}
function addOption(selectbox,text)
{
var optn = document.createElement("OPTION");
optn.text = text;
optn.value = text;
selectbox.options.add(optn);
}