function changeContinent(dirid)
{
 var a = getElement('CountrySelector');
 var id = 0;
 for(var id=0; id<countries.length; id++)
	if(countries[id].id==dirid)
		break;
		
 for(var i=0; i<countries[id].countries.length; i++)
 {
  //var ai = a.selectedIndex;
  a.length = countries[id].countries.length;
  a[i].text = countries[id].countries[i].title; 
  a[i].value = countries[id].countries[i].id;
  //a[i].setAttribute('onclick', 'javascript:changeCountry()'); 
 }
 a.selectedIndex = 0;
 getElement('WorldMap').src = 'im/WorldMap_' + id + '.png';
 getElement('ContinentSelector').selectedIndex = id;
}

function continentChanged()
{
 var b = getElement('ContinentSelector');
 var bi = b.selectedIndex;
 b.options[bi].value
 var a = getElement('CountrySelector');
 for(var i=0; i<countries[bi].countries.length; i++)
 {
  //var ai = a.selectedIndex;
  a.length = countries[bi].countries.length;
  a[i].text = countries[bi].countries[i].title; 
  a[i].value = countries[bi].countries[i].id; 
  //a[i].setAttribute('onclick', 'javascript:changeCountry()'); 
 }
 a.selectedIndex = 0;
 getElement('WorldMap').src = 'im/WorldMap_' + bi + '.png';
}

function countryChanged()
{
 var b = getElement('ContinentSelector');
 var bi = b.selectedIndex;
 var a = getElement('CountrySelector');
 var ai = a.selectedIndex;
 var baseURL = '';
 if(aid != null) baseURL += 'aid=' + aid;
 if(did != null) {if(baseURL.length > 0) baseURL +='&'; baseURL += 'did=' + did;}
 if(bi>=0 && ai>0)
  document.location = '?' + baseURL + '&country=' + a.options[ai].value;
}