/*Event.domReady.add(function() {
  dispNone();
});
*/
window.onload = dispNone;

function dispNone(){
 for(i=1; i<=10; i++){
  delObj = document.getElementById('div' + i);
  delObj.style.display = 'none';
 }
}
function dispBlock(){
 for(i=0; i<=10; i++){
  delObj = document.getElementById('div' + i);
  delObj.style.display = 'block';
 }
}
function set_pref(region){
 //var region_code = region.selectedIndex;
 var region_code = region.value;
 
 dispNone();
 if(region_code !== '0'){
  document.getElementById('div0').style.display = 'none';
  var divObj = document.getElementById('div' + region_code);
  divObj.style.display = 'block';
 }else if(region_code == '0'){
  document.getElementById('div0').style.display = 'block';
  //dispBlock();
 }
}