function getRegionData() {
	var requestUrl = "";
	var selectedIndexValue = ""; 
	var params = "";
	
	selectedIndexValue = document.getElementById("country")[document.getElementById("country").selectedIndex].value;
	requestUrl = "http://www.direkthotel.at/index.php";
	params = "eID=getRegionData&country=" + selectedIndexValue;
	
	var myAjax = new Ajax.Request(requestUrl,
	  { method: 'get', parameters: params, onComplete: updateRegions }
	);
}

function updateRegions( originalRequest ) {
  entries = originalRequest.responseText;
  
  entries = entries.split(":");
  html = '<select name="region" id="region">';
  for (i=0; i < entries.length-1; i++) {
	  regionEntry = entries[i].split(",");
	  html = html + '<option value="';
	  html = html + regionEntry[0] + '">' + regionEntry[1];
	  html = html + '</option>';
  }
  
  html = html + '</select>';
  document.getElementById("regionValues").innerHTML = html;
}