function select_advertiser_city(){showTableRow(getParentRow(ge('city_selector')));hide(getParentRow(ge('country')));clear_values();}
function select_advertiser_country(){if(!geo_countries_populated){get_country_geos();}
showTableRow(getParentRow(ge('country')));hide(getParentRow(ge('city_selector')));clear_values();}
function advertise_on_selected(){get_geos('network_key',ge('n').value,populate_zipcode_id);}
function populate_zipcode_id(ajaxObj,responseText){eval(responseText);ge('zipcode_id').value=zipcode_id;}