function over (obj, clas) {
  if (obj.className != clas+'_s'){
    obj.className = clas+'_roll';
  }
}

function unover (obj, clas) {
  if (obj.className != clas+ '_s'){
    obj.className = clas;
  }
}

function swich_img (img_obj, url, ch_txt) {
  var path = "modules/Country/i/large/";
  var obj_sel_img = document.getElementById (sel_img);
  var obj_big_img = document.getElementById ("big_img");
  var obj_big_img_url = document.getElementById ("big_img_url");

  url_img = img_obj.src;
  indx = url_img.lastIndexOf('/')
  file_name = url_img.substring (indx+1, url_img.length);

  obj_big_img.src = path + file_name;
  obj_big_img_url.href = url;

  obj_sel_img.className = "gi";
  img_obj.className = "gi_sel";
  sel_img = img_obj.id;
  
  var obj_txt = document.getElementById ("i_txt");
  obj_txt.innerHTML = ch_txt;
}



function goToUrl (url) {
  document.location = url;
}