/*
 * AJAX applets
 */
 
function ajaxGet(uri, f) {
  if (window.XMLHttpRequest) {
    ajax = new XMLHttpRequest();
  } else {
    if (window.ActiveXObject) {           
      ajax = new ActiveXObject("Microsoft.XMLHTTP");
    } else {
      alert('Enano client-side runtime error: No AJAX support, unable to continue');
      return;
    }
  }
  ajax.onreadystatechange = f;
  ajax.open('GET', uri, true);
  ajax.setRequestHeader( "If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT" );
  ajax.send(null);
}

function ajaxPost(uri, parms, f) {
  if (window.XMLHttpRequest) {
    ajax = new XMLHttpRequest();
  } else {
    if (window.ActiveXObject) {           
      ajax = new ActiveXObject("Microsoft.XMLHTTP");
    } else {
      alert('Enano client-side runtime error: No AJAX support, unable to continue');
      return;
    }
  }
  ajax.onreadystatechange = f;
  ajax.open('POST', uri, true);
  ajax.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  // Setting Content-length in Safari triggers a warning
  if ( !is_Safari )
  {
    ajax.setRequestHeader("Content-length", parms.length);
  }
  ajax.setRequestHeader("Connection", "close");
  ajax.send(parms);
}

function ajaxEscape(text)
{
  /*
  text = escape(text);
  text = text.replace(/\+/g, '%2B', text);
  */
  text = window.encodeURIComponent(text);
  return text;
}

function ajaxAltEscape(text)
{
  text = escape(text);
  text = text.replace(/\+/g, '%2B', text);
  return text;
}

// Page editor

function ajaxEditor()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  setAjaxLoading();
  ajaxGet(stdAjaxPrefix+'&_mode=getsource', function() {
      if(ajax.readyState == 4) {
        unsetAjaxLoading();
        if(edit_open) {
          c=confirm($lang.get('editor_msg_revert_confirm'));
          if(!c) return;
        }
        edit_open = true;
        selectButtonMajor('article');
        selectButtonMinor('edit');
        if(in_array('ajaxEditArea', grippied_textareas))
        {
          // Allow the textarea grippifier to re-create the resizer control on the textarea
          grippied_textareas.pop(in_array('ajaxEditArea', grippied_textareas));
        }
        disableUnload($lang.get('editor_msg_unload'));
        var switcher = ( readCookie('enano_editor_mode') == 'tinymce' ) ?
                        '<a href="#" onclick="setEditorText(); return false;">' + $lang.get('editor_btn_wikitext') + '</a>  |  ' + $lang.get('editor_btn_graphical') :
                        $lang.get('editor_btn_wikitext') + '  |  <a href="#" onclick="setEditorMCE(); return false;">' + $lang.get('editor_btn_graphical') + '</a>' ;
        document.getElementById('ajaxEditContainer').innerHTML = '\
        <div id="mdgPreviewContainer"></div> \
        <span id="switcher">' + switcher + '</span><br />\
        <form name="mdgAjaxEditor" method="get" action="#" onsubmit="ajaxSavePage(); return false;">\
        <textarea id="ajaxEditArea" rows="20" cols="60" style="display: block; margin: 1em 0 1em 1em; width: 96.5%;">'+ajax.responseText+'</textarea><br />\
          ' + $lang.get('editor_lbl_edit_summary') + ' <input id="ajaxEditSummary" size="40" /><br />\
          <input id="ajaxEditMinor" name="minor" type="checkbox" /> <label for="ajaxEditMinor">' + $lang.get('editor_lbl_minor_edit') + '</label><br />\
          <a href="#" onclick="void(ajaxSavePage()); return false;">' + $lang.get('editor_btn_save') + '</a>  |  <a href="#" onclick="void(ajaxShowPreview()); return false;">' + $lang.get('editor_btn_preview') + '</a>  |  <a href="#" onclick="void(ajaxEditor()); return false;">' + $lang.get('editor_btn_revert') + '</a>  |  <a href="#" onclick="void(ajaxDiscard()); return false;">' + $lang.get('editor_btn_cancel') + '</a>\
          <br />\
          '+editNotice+'\
        </form>';
        // initTextareas();
        if(readCookie('enano_editor_mode') == 'tinymce')
        {
          $('ajaxEditArea').switchToMCE();
        }
      }
  });
}

function setEditorMCE()
{
  $('ajaxEditArea').switchToMCE();
  createCookie('enano_editor_mode', 'tinymce', 365);
  $('switcher').object.innerHTML = '<a href="#" onclick="setEditorText(); return false;">' + $lang.get('editor_btn_wikitext') + '</a>  |  ' + $lang.get('editor_btn_graphical');
}

function setEditorText()
{
  $('ajaxEditArea').destroyMCE();
  createCookie('enano_editor_mode', 'text', 365);
  $('switcher').object.innerHTML = $lang.get('editor_btn_wikitext') + '  |  <a href="#" onclick="setEditorMCE(); return false;">' + $lang.get('editor_btn_graphical') + '</a>';
}

function ajaxViewSource()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  setAjaxLoading();
  ajaxGet(stdAjaxPrefix+'&_mode=getsource', function() {
      if(ajax.readyState == 4) {
        unsetAjaxLoading();
        edit_open = false;
        selectButtonMajor('article');
        selectButtonMinor('edit');
        if(in_array('ajaxEditArea', grippied_textareas))
        {
          // Allow the textarea grippifier to re-create the resizer control on the textarea
          grippied_textareas.pop(in_array('ajaxEditArea', grippied_textareas));
        }
        document.getElementById('ajaxEditContainer').innerHTML = '\
          <form method="get" action="#" onsubmit="ajaxSavePage(); return false;">\
            <textarea readonly="readonly" id="ajaxEditArea" rows="20" cols="60" style="display: block; margin: 1em 0 1em 1em; width: 96.5%;">'+ajax.responseText+'</textarea><br />\
            <a href="#" onclick="void(ajaxReset()); return false;">' + $lang.get('editor_btn_closeviewer') + '</a>\
          </form>';
        initTextareas();
      }
  });
}

function ajaxShowPreview()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  goBusy('Loading preview...');
  var text = ajaxEscape($('ajaxEditArea').getContent());
  if(document.mdgAjaxEditor.minor.checked) minor='&minor';
  else minor='';
  ajaxPost(stdAjaxPrefix+'&_mode=preview', 'summary='+document.getElementById('ajaxEditSummary').value+minor+'&text='+text, function() {
    if(ajax.readyState == 4) {
      unBusy();
      edit_open = false;
      document.getElementById('mdgPreviewContainer').innerHTML = ajax.responseText;
    }
  });
}

function ajaxSavePage()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  //goBusy('Saving page...');
  var text = ajaxEscape($('ajaxEditArea').getContent());
  if(document.mdgAjaxEditor.minor.checked) minor='&minor';
  else minor='';
  ajaxPost(stdAjaxPrefix+'&_mode=savepage', 'summary='+document.getElementById('ajaxEditSummary').value+minor+'&text='+text, function() {
    if(ajax.readyState == 4) {
      unBusy();
      edit_open = false;
      document.getElementById('ajaxEditContainer').innerHTML = ajax.responseText;
      enableUnload();
      unselectAllButtonsMinor();
    }
  });
}

function ajaxDiscard()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  c = confirm($lang.get('editor_msg_discard_confirm'));
  if(!c) return;
  ajaxReset();
}

function ajaxReset()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  var ns_id = strToPageID(title);
  if ( ns_id[1] == 'Special' || ns_id[1] == 'Admin' )
    return false;
  enableUnload();
  setAjaxLoading();
  ajaxGet(stdAjaxPrefix+'&_mode=getpage&noheaders', function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      edit_open = false;
      document.getElementById('ajaxEditContainer').innerHTML = ajax.responseText;
      selectButtonMajor('article');
      unselectAllButtonsMinor();
    }
  });
}

// Miscellaneous AJAX applets

function ajaxProtect(l) {
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  if(shift) {
    r = 'NO_REASON';
  } else {
    r = prompt($lang.get('ajax_protect_prompt_reason'));
    if(!r || r=='') return;
  }
  setAjaxLoading();
  document.getElementById('protbtn_0').style.textDecoration = 'none';
  document.getElementById('protbtn_1').style.textDecoration = 'none';
  document.getElementById('protbtn_2').style.textDecoration = 'none';
  document.getElementById('protbtn_'+l).style.textDecoration = 'underline';
  ajaxPost(stdAjaxPrefix+'&_mode=protect', 'reason='+escape(r)+'&level='+l, function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      if(ajax.responseText != 'good')
        alert(ajax.responseText);
    }
  });
}

function ajaxRename()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  r = prompt($lang.get('ajax_rename_prompt'));
  if(!r || r=='') return;
  setAjaxLoading();
  ajaxPost(stdAjaxPrefix+'&_mode=rename', 'newtitle='+escape(r), function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      alert(ajax.responseText);
    }
  });
}

function ajaxMakePage()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  setAjaxLoading();
  ajaxPost(ENANO_SPECIAL_CREATEPAGE, ENANO_CREATEPAGE_PARAMS, function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      window.location.reload();
    }
  });
}

function ajaxDeletePage()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  var reason = prompt($lang.get('ajax_delete_prompt_reason'));
  if ( !reason || reason == '' )
  {
    return false;
  }
  c = confirm($lang.get('ajax_delete_confirm'));
  if(!c)
  {
    return;
  }
  setAjaxLoading();
  ajaxPost(stdAjaxPrefix+'&_mode=deletepage', 'reason=' + escape(reason), function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      alert(ajax.responseText);
      window.location.reload();                                                                           
    }
  });
}

function ajaxDelVote()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  c = confirm($lang.get('ajax_delvote_confirm'));
  if(!c) return;
  setAjaxLoading();
  ajaxGet(stdAjaxPrefix+'&_mode=delvote', function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      alert(ajax.responseText);
    }
  });
}

function ajaxResetDelVotes()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  c = confirm($lang.get('ajax_delvote_reset_confirm'));
  if(!c) return;
  setAjaxLoading();
  ajaxGet(stdAjaxPrefix+'&_mode=resetdelvotes', function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      alert(ajax.responseText);
      item = document.getElementById('mdgDeleteVoteNoticeBox');
      if(item)
      {
        opacity('mdgDeleteVoteNoticeBox', 100, 0, 1000);
        setTimeout("document.getElementById('mdgDeleteVoteNoticeBox').style.display = 'none';", 1000);
      }
    }
  });
}

function ajaxSetWikiMode(val) {
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  setAjaxLoading();
  document.getElementById('wikibtn_0').style.textDecoration = 'none';
  document.getElementById('wikibtn_1').style.textDecoration = 'none';
  document.getElementById('wikibtn_2').style.textDecoration = 'none';
  document.getElementById('wikibtn_'+val).style.textDecoration = 'underline';
  ajaxGet(stdAjaxPrefix+'&_mode=setwikimode&mode='+val, function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      if(ajax.responseText!='GOOD')
      {
        alert(ajax.responseText);
      }
    }
  });
}

// Editing/saving category information
// This was not easy to write, I hope enjoy it, and dang I swear I'm gonna
// find someone to work on just the Javascript part of Enano...

function ajaxCatEdit()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  setAjaxLoading();
  ajaxGet(stdAjaxPrefix+'&_mode=catedit', function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      edit_open = false;
      eval(ajax.responseText);
    }
  });
}

function ajaxCatSave()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  if(!catlist)
  {
    alert('Var catlist has no properties');
    return;
  }
  query='';
  for(i=0;i<catlist.length;i++)
  {
    l = 'if(document.forms.mdgCatForm.mdgCat_'+catlist[i]+'.checked) s = true; else s = false;';
    eval(l);
    if(s) query = query + '&' + catlist[i] + '=true';
  }
  setAjaxLoading();
  query = query.substring(1, query.length);
  ajaxPost(stdAjaxPrefix+'&_mode=catsave', query, function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      edit_open = false;
      if(ajax.responseText != 'GOOD') alert(ajax.responseText);
      ajaxReset();
    }
  });
}

// History stuff

function ajaxHistory()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  setAjaxLoading();
  ajaxGet(stdAjaxPrefix+'&_mode=histlist', function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      edit_open = false;
      selectButtonMajor('article');
      selectButtonMinor('history');
      document.getElementById('ajaxEditContainer').innerHTML = ajax.responseText;
      buildDiffList();
    }
  });
}

function ajaxHistView(oldid, tit) {
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  if(!tit) tit=title;
  setAjaxLoading();
  ajaxGet(append_sid(scriptPath+'/ajax.php?title='+tit+'&_mode=getpage&oldid='+oldid), function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      edit_open = false;
      document.getElementById('ajaxEditContainer').innerHTML = ajax.responseText;
    }
  });
}

function ajaxRollback(id) {
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  setAjaxLoading();
  ajaxGet(stdAjaxPrefix+'&_mode=rollback&id='+id, function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      alert(ajax.responseText);
    }
  });
}

function ajaxClearLogs()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  c = confirm($lang.get('ajax_clearlogs_confirm'));
  if(!c) return;
  c = confirm($lang.get('ajax_clearlogs_confirm_nag'));
  if(!c) return;
  setAjaxLoading();
  ajaxGet(stdAjaxPrefix+'&_mode=flushlogs', function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      alert(ajax.responseText);
      window.location.reload();
    }
  });
}

var timelist;

function buildDiffList()
{
  arrDiff1Buttons = getElementsByClassName(document, 'input', 'clsDiff1Radio');
  arrDiff2Buttons = getElementsByClassName(document, 'input', 'clsDiff2Radio');
  var len = arrDiff1Buttons.length;
  if ( len < 1 )
    return false;
  timelist = new Array();
  for ( var i = 0; i < len; i++ )
  {
    timelist.push( arrDiff2Buttons[i].id.substr(6) );
  }
  timelist.push( arrDiff1Buttons[len-1].id.substr(6) );
  delete(timelist.toJSONString);
  for ( var i = 1; i < timelist.length-1; i++ )
  {
    if ( i >= timelist.length ) break;
    arrDiff2Buttons[i].style.display = 'none';
  }
}

function selectDiff1Button(obj)
{
  var this_time = obj.id.substr(6);
  var index = parseInt(in_array(this_time, timelist));
  for ( var i = 0; i < timelist.length - 1; i++ )
  {
    if ( i < timelist.length - 1 )
    {
      var state = ( i < index ) ? 'inline' : 'none';
      var id = 'diff2_' + timelist[i];
      document.getElementById(id).style.display = state;
      
      // alert("Debug:\nIndex: "+index+"\nState: "+state+"\ni: "+i);
    }
  }
}

function selectDiff2Button(obj)
{
  var this_time = obj.id.substr(6);
  var index = parseInt(in_array(this_time, timelist));
  for ( var i = 1; i < timelist.length; i++ )
  {
    if ( i < timelist.length - 1 )
    {
      var state = ( i > index ) ? 'inline' : 'none';
      var id = 'diff1_' + timelist[i];
      document.getElementById(id).style.display = state;
      
      // alert("Debug:\nIndex: "+index+"\nState: "+state+"\ni: "+i);
    }
  }
}

function ajaxHistDiff()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  var id1=false;
  var id2=false;
  for ( i = 0; i < arrDiff1Buttons.length; i++ )
  {
    k = i + '';
    kpp = i + 1;
    kpp = kpp + '';
    if(arrDiff1Buttons[k].checked) id1 = arrDiff1Buttons[k].id.substr(6);
    if(arrDiff2Buttons[k].checked) id2 = arrDiff2Buttons[k].id.substr(6);
  }
  if(!id1 || !id2) { alert('BUG: Couldn\'t get checked radiobutton state'); return; }
  setAjaxLoading();
  ajaxGet(stdAjaxPrefix+'&_mode=pagediff&diff1='+id1+'&diff2='+id2, function()
    {
      if(ajax.readyState==4)
      {
        unsetAjaxLoading();
        document.getElementById('ajaxEditContainer').innerHTML = ajax.responseText;
      }
    });
}

// Change the user's preferred style/theme

function ajaxChangeStyle()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  var inner_html = '';
  inner_html += '<p><label>' + $lang.get('ajax_changestyle_lbl_theme') + ' ';
  inner_html += '  <select id="chtheme_sel_theme" onchange="ajaxGetStyles(this.value);">';
  inner_html += '    <option value="_blank" selected="selected">' + $lang.get('ajax_changestyle_select') + '</option>';
  inner_html +=      ENANO_THEME_LIST;
  inner_html += '  </select>';
  inner_html += '</label></p>';
  var chtheme_mb = new messagebox(MB_OKCANCEL|MB_ICONQUESTION, $lang.get('ajax_changestyle_title'), inner_html);
  chtheme_mb.onbeforeclick['OK'] = ajaxChangeStyleComplete;
}

function ajaxGetStyles(id)
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  var thediv = document.getElementById('chtheme_sel_style_parent');
  if ( thediv )
  {
    thediv.parentNode.removeChild(thediv);
  }
  if ( id == '_blank' )
  {
    return null;
  }
  ajaxGet(stdAjaxPrefix + '&_mode=getstyles&id=' + id, function() {
      if ( ajax.readyState == 4 )
      {
        // IE doesn't like substr() on ajax.responseText
        var response = String(ajax.responseText + ' ');
        response = response.substr(0, response.length - 1);
        if ( response.substr(0,1) != '[' )
        {
          alert('Invalid or unexpected JSON response from server:\n' + response);
          return null;
        }
        
        // Build a selector and matching label
        var data = parseJSON(response);
        var options = new Array();
        for( var i in data )
        {
          var item = data[i];
          var title = themeid_to_title(item);
          var option = document.createElement('option');
          option.value = item;
          option.appendChild(document.createTextNode(title));
          options.push(option);
        }
        var p_parent = document.createElement('p');
        var label  = document.createElement('label');
        p_parent.id = 'chtheme_sel_style_parent';
        label.appendChild(document.createTextNode($lang.get('ajax_changestyle_lbl_style') + ' '));
        var select = document.createElement('select');
        select.id = 'chtheme_sel_style';
        for ( var i in options )
        {
          select.appendChild(options[i]);
        }
        label.appendChild(select);
        p_parent.appendChild(label);
        
        // Stick it onto the messagebox
        var div = document.getElementById('messageBox');
        var kid = div.firstChild.nextSibling;
        
        kid.appendChild(p_parent);
        
      }
    });
}

function ajaxChangeStyleComplete()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  var theme = $('chtheme_sel_theme');
  var style = $('chtheme_sel_style');
  if ( !theme.object || !style.object )
  {
    alert($lang.get('ajax_changestyle_pleaseselect_theme'));
    return true;
  }
  var theme_id = theme.object.value;
  var style_id = style.object.value;
  
  if ( typeof(theme_id) != 'string' || typeof(style_id) != 'string' )
  {
    alert('Couldn\'t get theme or style ID');
    return true;
  }
  
  if ( theme_id.length < 1 || style_id.length < 1 )
  {
    alert('Theme or style ID is zero length');
    return true;
  }
  
  ajaxPost(stdAjaxPrefix + '&_mode=change_theme', 'theme_id=' + escape(theme_id) + '&style_id=' + escape(style_id), function()
    {
      if ( ajax.readyState == 4 )
      {
        if ( ajax.responseText == 'GOOD' )
        {
          var c = confirm($lang.get('ajax_changestyle_success'));
          if ( c )
            window.location.reload();
        }
        else
        {
          alert('Error occurred during attempt to change theme:\n' + ajax.responseText);
        }
      }
    });
  
  return false;
  
}

function themeid_to_title(id)
{
  if ( typeof(id) != 'string' )
    return false;
  id = id.substr(0, 1).toUpperCase() + id.substr(1);
  id = id.replace(/_/g, ' ');
  id = id.replace(/-/g, ' ');
  return id;
}

/*
function ajaxChangeStyle()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  var win = document.getElementById("cn2");
  win.innerHTML = ' \
    <form action="'+ENANO_SPECIAL_CHANGESTYLE+'" onsubmit="jws.closeWin(\'root2\');" method="post" style="text-align: center"> \
    <h3>Select a theme...</h3>\
    <select id="mdgThemeID" name="theme" onchange="ajaxGetStyles(this.value);"> \
    '+ENANO_THEME_LIST+' \
    </select> \
    <div id="styleSelector"></div>\
    <br /><br />\
    <input type="hidden" name="return_to" value="'+title+'" />\
    <input id="styleSubmitter" type="submit" style="display: none; font-weight: bold" value="Change theme" /> \
    <input type="button" value="Cancel" onclick="jws.closeWin(\'root2\');" /> \
    </form> \
  ';
  ajaxGetStyles(ENANO_CURRENT_THEME);
  jws.openWin('root2', 340, 300);
}

function ajaxGetStyles(id) {
  setAjaxLoading();
  ajaxGet(stdAjaxPrefix+'&_mode=getstyles&id='+id, function() {
    if(ajax.readyState == 4) {
      unsetAjaxLoading();
      eval(ajax.responseText);
      html = '<h3>And a style...</h3><select id="mdgStyleID" name="style">';
      for(i=0;i<list.length;i++) {
        lname = list[i].substr(0, 1).toUpperCase() + list[i].substr(1, list[i].length);
        html = html + '<option value="'+list[i]+'">'+lname+'</option>';
      }
      html = html + '</select>';
      document.getElementById('styleSelector').innerHTML = html;
      document.getElementById('styleSubmitter').style.display = 'inline'; 
    }
  });
}
*/

function ajaxSwapCSS()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  setAjaxLoading();
  if(_css) {
    document.getElementById('mdgCss').href = main_css;
    _css = false;
  } else {
    document.getElementById('mdgCss').href = print_css;
    _css = true;
  }
  unsetAjaxLoading();
  menuOff();
}

function ajaxSetPassword()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  pass = hex_sha1(document.getElementById('mdgPassSetField').value);
  setAjaxLoading();
  ajaxPost(stdAjaxPrefix+'&_mode=setpass', 'password='+pass, function()
    {
      unsetAjaxLoading();
      if(ajax.readyState==4)
      {
        alert(ajax.responseText);
      }
    }
  );
}

function ajaxStartLogin()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  ajaxPromptAdminAuth(function(k) {
      window.location.reload();
    }, USER_LEVEL_MEMBER);
}

function ajaxStartAdminLogin()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  if ( auth_level < USER_LEVEL_ADMIN )
  {
    ajaxPromptAdminAuth(function(k) {
      ENANO_SID = k;
      auth_level = USER_LEVEL_ADMIN;
      var loc = makeUrlNS('Special', 'Administration');
      if ( (ENANO_SID + ' ').length > 1 )
        window.location = loc;
    }, USER_LEVEL_ADMIN);
    return false;
  }
  var loc = makeUrlNS('Special', 'Administration');
  window.location = loc;
}

function ajaxAdminPage()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  if ( auth_level < USER_LEVEL_ADMIN )
  {
    ajaxPromptAdminAuth(function(k) {
      ENANO_SID = k;
      auth_level = USER_LEVEL_ADMIN;
      var loc = String(window.location + '');
      window.location = append_sid(loc);
      var loc = makeUrlNS('Special', 'Administration', 'module=' + namespace_list['Admin'] + 'PageManager&source=ajax&page_id=' + ajaxEscape(title));
      if ( (ENANO_SID + ' ').length > 1 )
        window.location = loc;
    }, 9);
    return false;
  }
  var loc = makeUrlNS('Special', 'Administration', 'module=' + namespace_list['Admin'] + 'PageManager&source=ajax&page_id=' + ajaxEscape(title));
  window.location = loc;
}

var navto_ns;
var navto_pg;
var navto_ul;

function ajaxLoginNavTo(namespace, page_id, min_level)
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  navto_pg = page_id;
  navto_ns = namespace;
  navto_ul = min_level;
  if ( auth_level < min_level )
  {
    ajaxPromptAdminAuth(function(k) {
      ENANO_SID = k;
      auth_level = navto_ul;
      var loc = makeUrlNS(navto_ns, navto_pg);
      if ( (ENANO_SID + ' ').length > 1 )
        window.location = loc;
    }, min_level);
    return false;
  }
  var loc = makeUrlNS(navto_ns, navto_pg);
  window.location = loc;
}

function ajaxAdminUser(username)
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  if ( auth_level < USER_LEVEL_ADMIN )
  {
    ajaxPromptAdminAuth(function(k) {
      ENANO_SID = k;
      auth_level = USER_LEVEL_ADMIN;
      var loc = String(window.location + '');
      window.location = append_sid(loc);
      var loc = makeUrlNS('Special', 'Administration', 'module=' + namespace_list['Admin'] + 'UserManager&src=get&user=' + ajaxEscape(username));
      if ( (ENANO_SID + ' ').length > 1 )
        window.location = loc;
    }, 9);
    return false;
  }
  var loc = makeUrlNS('Special', 'Administration', 'module=' + namespace_list['Admin'] + 'UserManager&src=get&user=' + ajaxEscape(username));
  window.location = loc;
}

function ajaxDisableEmbeddedPHP()
{
  // IE <6 pseudo-compatibility
  if ( KILL_SWITCH )
    return true;
  if ( !confirm($lang.get('ajax_killphp_confirm')) )
    return false;
  var $killdiv = $dynano('php_killer');
  if ( !$killdiv.object )
  {
    alert('Can\'t get kill div object');
    return false;
  }
  $killdiv.object.innerHTML = '<img alt="Loading..." src="' + scriptPath + '/images/loading-big.gif" /><br />Making request...';
  var url = makeUrlNS('Admin', 'Home', 'src=ajax');
  ajaxPost(url, 'act=kill_php', function() {
      if ( ajax.readyState == 4 )
      {
        if ( ajax.responseText == '1' )
        {
          var $killdiv = $dynano('php_killer');
          //$killdiv.object.innerHTML = '<img alt="Success" src="' + scriptPath + '/images/error.png" /><br />Embedded PHP in pages has been disabled.';
          $killdiv.object.parentNode.removeChild($killdiv.object);
          var newdiv = document.createElement('div');
          // newdiv.style = $killdiv.object.style;
          newdiv.className = $killdiv.object.className;
          newdiv.innerHTML = '<img alt="Success" src="' + scriptPath + '/images/error.png" /><br />' + $lang.get('ajax_killphp_success');
          $killdiv.object.parentNode.appendChild(newdiv);
          $killdiv.object.parentNode.removeChild($killdiv.object);
        }
        else
        {
          var $killdiv = $dynano('php_killer');
          $killdiv.object.innerHTML = ajax.responseText;
        }
      }
    });
}

var catHTMLBuf = false;

function ajaxCatToTag()
{
  if ( KILL_SWITCH )
    return false;
  setAjaxLoading();
  ajaxGet(stdAjaxPrefix + '&_mode=get_tags', function()
    {
      if ( ajax.readyState == 4 )
      {
        unsetAjaxLoading();
        var resptext = String(ajax.responseText + ' ');
        resptext = resptext.substr(0, resptext.length-1);
        if ( resptext.substr(0, 1) != '{' )
        {
          alert('Invalid JSON response from server:\n' + resptext);
          return false;
        }
        var json = parseJSON(resptext);
        var catbox = document.getElementById('mdgCatBox');
        if ( !catbox )
          return false;
        var linkbox = catbox.parentNode.firstChild.firstChild.nextSibling;
        linkbox.firstChild.nodeValue = $lang.get('catedit_catbox_link_showcategorization');
        linkbox.onclick = function() { ajaxTagToCat(); return false; };
        catHTMLBuf = catbox.innerHTML;
        catbox.innerHTML = '';
        catbox.appendChild(document.createTextNode($lang.get('tags_lbl_page_tags')+' '));
        if ( json.tags.length < 1 )
        {
          catbox.appendChild(document.createTextNode($lang.get('tags_lbl_no_tags')));
        }
        for ( var i = 0; i < json.tags.length; i++ )
        {
          catbox.appendChild(document.createTextNode(json.tags[i].name));
          if ( json.tags[i].can_del )
          {
            catbox.appendChild(document.createTextNode(' '));
            var a = document.createElement('a');
            a.appendChild(document.createTextNode('[X]'));
            a.href = '#';
            a._js_tag_id = json.tags[i].id;
            a.onclick = function() { ajaxDeleteTag(this, this._js_tag_id); return false; }
            catbox.appendChild(a);
          }
          if ( ( i + 1 ) < json.tags.length )
            catbox.appendChild(document.createTextNode(', '));
        }
        if ( json.can_add )
        {
          catbox.appendChild(document.createTextNode(' '));
          var addlink = document.createElement('a');
          addlink.href = '#';
          addlink.onclick = function() { try { ajaxAddTagStage1(); } catch(e) { }; return false; };
          addlink.appendChild(document.createTextNode($lang.get('tags_btn_add_tag')));
          catbox.appendChild(addlink);
        }
      }
    });
}

var addtag_open = false;

function ajaxAddTagStage1()
{
  if ( addtag_open )
    return false;
  var catbox = document.getElementById('mdgCatBox');
  var adddiv = document.createElement('div');
  var text = document.createElement('input');
  var addlink = document.createElement('a');
  addlink.href = '#';
  addlink.onclick = function() { ajaxAddTagStage2(this.parentNode.firstChild.nextSibling.value, this.parentNode); return false; };
  addlink.appendChild(document.createTextNode($lang.get('tags_btn_add')));
  text.type = 'text';
  text.size = '15';
  text.onkeyup = function(e)
  {
    if ( e.keyCode == 13 )
    {
      ajaxAddTagStage2(this.value, this.parentNode);
    }
  }
  
  adddiv.style.margin = '5px 0 0 0';
  adddiv.appendChild(document.createTextNode($lang.get('tags_lbl_add_tag')+' '));
  adddiv.appendChild(text);
  adddiv.appendChild(document.createTextNode(' '));
  adddiv.appendChild(addlink);
  catbox.appendChild(adddiv);
  addtag_open = true;
}

var addtag_nukeme = false;

function ajaxAddTagStage2(tag, nukeme)
{
  if ( !addtag_open )
    return false;
  if ( addtag_nukeme )
    return false;
  addtag_nukeme = nukeme;
  tag = ajaxEscape(tag);
  setAjaxLoading();
  ajaxPost(stdAjaxPrefix + '&_mode=addtag', 'tag=' + tag, function()
    {
      if ( ajax.readyState == 4 )
      {
        unsetAjaxLoading();
        var nukeme = addtag_nukeme;
        addtag_nukeme = false;
        var resptext = String(ajax.responseText + ' ');
        resptext = resptext.substr(0, resptext.length-1);
        if ( resptext.substr(0, 1) != '{' )
        {
          alert('Invalid JSON response from server:\n' + resptext);
          return false;
        }
        var json = parseJSON(resptext);
        var parent = nukeme.parentNode;
        parent.removeChild(nukeme);
        addtag_open = false;
        if ( json.success )
        {
          var node = parent.childNodes[1];
          var insertafter = false;
          var nukeafter = false;
          if ( node.nodeValue == $lang.get('tags_lbl_no_tags') )
          {
            nukeafter = true;
          }
          insertafter = parent.childNodes[ parent.childNodes.length - 3 ];
          // these need to be inserted in reverse order
          if ( json.can_del )
          {
            var a = document.createElement('a');
            a.appendChild(document.createTextNode('[X]'));
            a.href = '#';
            a._js_tag_id = json.tag_id;
            a.onclick = function() { ajaxDeleteTag(this, this._js_tag_id); return false; }
            insertAfter(parent, a, insertafter);
            insertAfter(parent, document.createTextNode(' '), insertafter);
          }
          insertAfter(parent, document.createTextNode(json.tag), insertafter);
          if ( !nukeafter )
          {
            insertAfter(parent, document.createTextNode(', '), insertafter);
          }
          if ( nukeafter )
          {
            parent.removeChild(insertafter);
          }
        }
        else
        {
          alert(json.error);
        }
      }
    });
}

function ajaxDeleteTag(parentobj, tag_id)
{
  var arrDelete = [ parentobj, parentobj.previousSibling, parentobj.previousSibling.previousSibling ];
  var parent = parentobj.parentNode;
  var writeNoTags = false;
  if ( parentobj.previousSibling.previousSibling.previousSibling.nodeValue == ', ' )
    arrDelete.push(parentobj.previousSibling.previousSibling.previousSibling);
  else if ( parentobj.previousSibling.previousSibling.previousSibling.nodeValue == $lang.get('tags_lbl_page_tags') + ' ' )
    arrDelete.push(parentobj.nextSibling);
  
  if ( parentobj.previousSibling.previousSibling.previousSibling.nodeValue == $lang.get('tags_lbl_page_tags') + ' ' &&
       parentobj.nextSibling.nextSibling.firstChild )
    if ( parentobj.nextSibling.nextSibling.firstChild.nodeValue == $lang.get('tags_btn_add_tag'))
      writeNoTags = true;
    
  ajaxPost(stdAjaxPrefix + '&_mode=deltag', 'tag_id=' + String(tag_id), function()
    {
      if ( ajax.readyState == 4 )
      {
        if ( ajax.responseText == 'success' )
        {
          for ( var i = 0; i < arrDelete.length; i++ )
          {
            try
            {
              parent.removeChild(arrDelete[i]);
            } catch(e) {}
          }
          if ( writeNoTags )
          {
            var node1 = document.createTextNode($lang.get('tags_lbl_no_tags'));
            var node2 = document.createTextNode(' ');
            insertAfter(parent, node1, parent.firstChild);
            insertAfter(parent, node2, node1);
          }
        }
        else
        {
          alert(ajax.responseText);
        }
      }
    });
}

function ajaxTagToCat()
{
  if ( !catHTMLBuf )
    return false;
  var catbox = document.getElementById('mdgCatBox');
  if ( !catbox )
    return false;
  addtag_open = false;
  var linkbox = catbox.parentNode.firstChild.firstChild.nextSibling;
  linkbox.firstChild.nodeValue = $lang.get('tags_catbox_link');
  linkbox.onclick = function() { ajaxCatToTag(); return false; };
  catbox.innerHTML = catHTMLBuf;
  catHTMLBuf = false;
}

var keepalive_interval = false;

function ajaxPingServer()
{
  ajaxGet(stdAjaxPrefix + '&_mode=ping', function()
    {
    });
}

function ajaxToggleKeepalive()
{
  if ( readCookie('admin_keepalive') == '1' )
  {
    createCookie('admin_keepalive', '0', 3650);
    if ( keepalive_interval )
      clearInterval(keepalive_interval);
    var span = document.getElementById('keepalivestat');
    span.firstChild.nodeValue = $lang.get('adm_btn_keepalive_off');
  }
  else
  {
    createCookie('admin_keepalive', '1', 3650);
    if ( !keepalive_interval )
      keepalive_interval = setInterval('ajaxPingServer();', 600000);
    var span = document.getElementById('keepalivestat');
    span.firstChild.nodeValue = $lang.get('adm_btn_keepalive_on');
    ajaxPingServer();
  }
}

var keepalive_onload = function()
{
  if ( readCookie('admin_keepalive') == '1' )
  {
    if ( !keepalive_interval )
      keepalive_interval = setInterval('ajaxPingServer();', 600000);
    var span = document.getElementById('keepalivestat');
    span.firstChild.nodeValue = $lang.get('adm_btn_keepalive_on');
  }
  else
  {
    if ( keepalive_interval )
      clearInterval(keepalive_interval);
    var span = document.getElementById('keepalivestat');
    span.firstChild.nodeValue = $lang.get('adm_btn_keepalive_off');
  }
};

function aboutKeepAlive()
{
  new messagebox(MB_OK|MB_ICONINFORMATION, $lang.get('user_keepalive_info_title'), $lang.get('user_keepalive_info_body'));
}

function ajaxShowCaptcha(code)
{
  var mydiv = document.createElement('div');
  mydiv.style.backgroundColor = '#FFFFFF';
  mydiv.style.padding = '10px';
  mydiv.style.position = 'absolute';
  mydiv.style.top = '0px';
  mydiv.id = 'autoCaptcha';
  mydiv.style.zIndex = String( getHighestZ() + 1 );
  var img = document.createElement('img');
  img.onload = function()
  {
    if ( this.loaded )
      return true;
    var mydiv = document.getElementById('autoCaptcha');
    var width = getWidth();
    var divw = $(mydiv).Width();
    var left = ( width / 2 ) - ( divw / 2 );
    mydiv.style.left = left + 'px';
    fly_in_top(mydiv, false, true);
    this.loaded = true;
  };
  img.src = makeUrlNS('Special', 'Captcha/' + code);
  img.onclick = function() { this.src = this.src + '/a'; };
  img.style.cursor = 'pointer';
  mydiv.appendChild(img);
  domObjChangeOpac(0, mydiv);
  var body = document.getElementsByTagName('body')[0];
  body.appendChild(mydiv);
}