var gal_root = '/Gallery';
var prev_get = '';

function comment(way, id) {
  switch(way) {
    case 'submit':
      with(document.getElementById('getCom')) {
        if (author.value =='Jméno') {
          alert('Žádné jméno???');
          return false;
        }
        if (message.value =='') {
          alert('Žádný text???');
          return false;
        }
        if (mail.value == 'Email') {
          mail.value = 'na';
        }
        submit();
      }
      break;
    case 'show':
      document.getElementById('showCom').style.display = 'none';
      document.getElementById('getCom').style.display  = '';
      if (id != 0) {
        document.getElementById('getCom').aid.value = id;
			}
      document.getElementById('getCom').author.focus();
      break;
    case 'cancel':
      document.getElementById('showCom').style.display = '';
      document.getElementById('getCom').style.display  = 'none';
      break;
    case 'display':
      var element = document.getElementById('art' + id);
      if (!element) {
        return false;
 	    }
      req  = request();
      url  = '/Blog/comment.php?cid=' + id ;
      req.onreadystatechange = function() {
        if (req.readyState == 4 && req.status == 200) {
          element.innerHTML = req.responseText;
          element.className = 'comment';
        }
      }
      req.open('GET', url, true);
      req.send(null);
      break;
  }
}

function getOption(pid, target) {
  if ( !document.getElementById(target)) {
    return false;
 	}
  if (prev_get != '') {
      el = document.getElementById(prev_get);
      label = prev_get + 's';
      label = label.substr(0,1).toUpperCase() + label.substr(1);
      el.innerHTML  = '<span id="' + prev_get + '">' + label + '</span>';
  }
  req  = request();
  left = new Array(3);
  left['camera'] = 20;
  left['lense']  = 93;
  left['film']   = 156;
  url  = gal_root + '/getoptions.php?get=' + target + '&left=' + left[target]
      + '&pid=' + pid ;
  req.onreadystatechange = function() {
    if (req.readyState == 4 && req.status == 200) {
      el = document.getElementById(target);
      el.innerHTML = req.responseText;
    }
  }
  prev_get = target;
  req.open('GET', url, true);
  req.send(null);
}

function go(where) {
  window.open(where.replace(/;/,'&'),'_self');
}

function listComments(pid) {
  req = request();
  url = doc_root + '/getoptions.php?set=comment&pid=' + pid + '&author=None';
  req.onreadystatechange = function() {
    if (req.readyState == 4 && req.status == 200) {
      resp = document.getElementById('thisComments');
      resp.innerHTML = req.responseText;
    }
  }
  req.open('GET', url, true);
  req.send(null);
}

function mail() {
  window.open('mailto:cujo@atlas.cz')
}

function pop(where) {
  popup = window.open(where.replace(/;/,'&'),'popup',
   'toolbar=no,scrollbars=yes,status=yes,resize=yes,width=420,height=400,top=0,left=80');
}

function really(where) {
  if(window.confirm('Opravdu???')) {
    window.open(where,'_self');
  }
}

function request() {
  try {
  req = new XMLHttpRequest();
  } catch(e) {
    try {
      req = new ActiveXObject('Msxml2.XMLHTTP');
    } catch (e) {
      try {
      req = new ActiveXObject('Microsoft.XMLHTTP');
      } catch (E) {
        req = false;
      }
    }
  }
  return req;
}

function setName(pid, set) {
  event.cancelBubble;
  if ( !document.getElementById(set)) {
    return false;
 	}
 	if (data = window.prompt('Desired ' + set + '?')) {
	  setOption(pid, set, "'" + data + "'");
	} else {
	  return false;
	}
}

function setOption(pid, set, id) {
  event.cancelBubble;
  if ( !document.getElementById(set)) {
    return false;
 	}
  req = request();
  url = gal_root + '/getoptions.php?set=' + set + '&id=' + id + '&pid=' + pid
      + '&album=' + album;
  req.onreadystatechange = function() {
    if (req.readyState == 4 && req.status == 200) {
      el = document.getElementById(set);
      el.innerHTML = req.responseText;
    }
  }
  req.open('GET', url, true);
  req.send(null);
}