//$Id: tagEdit.js,v 1.1.1.1 2008/01/09 01:19:03 jack Exp $

// check if it is IE
var IE_test = /msie/i.test(navigator.userAgent) && !/opera/i.test(navigator.userAgent);

function process(Ajax)
{
  clearMessages();
  var request = document.getElementById('request').value;

  // validate form
  if (!validateSubmission(request))
    return false;

  if (Ajax)
  {
    // used for giving the user messages
    var messages = document.getElementById('messages');
    messages.innerHTML = ' '; // clear

    var http_request = false;

    // initiate http object
    if (window.XMLHttpRequest)
    {
      // Mozilla, Safari, ...
      http_request = new XMLHttpRequest();

      if (http_request.overrideMimeType)
        http_request.overrideMimeType('text/xml');
    }
    else if (window.ActiveXObject) //IE
    {
      try
      {
        http_request = new ActiveXObject("Msxml2.XMLHTTP");
      }
      catch (e)
      {
        try
        {
          http_request = new ActiveXObject("Microsoft.XMLHTTP");
        }
        catch (e)
        {
        }
      }
    }

    // test success of object initiation
    if (!http_request)
      return true;

    http_request.onreadystatechange = function ()
    {
      checkState(http_request);
    };

    // Ajax call to this url
    var url = '../system/tagProcessAjax.php';
    http_request.open('POST', url, true);
    http_request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

    var request = document.getElementById('request').value;
    var tagID = document.getElementById('tagID').value;
    var tagItemID = document.getElementById('tagItemID').value;
    var objectID = document.getElementById('objectID').value;

    if (request == 'edit')
      var newTag = document.getElementById('edit_'+tagID+':'+tagItemID).value;
    else
      var newTag = document.getElementById('newTag').value;

    http_request.send('request='+request+
                      '&newTag='+encode64(newTag)+
                      '&tagID='+tagID+
                      '&tagItemID='+tagItemID+
                      '&objectID='+objectID);

    function checkState(http_request)
    {
      try
      {
        if (http_request.readyState == 4)
        {
          // 200 => OK response
          if (http_request.status == 200)
          {
            // evaluate the response
            eval("var result = ("+http_request.responseText+")");

            switch (request)
            {
              case 'create':
                if (result.tagID > -1)
                {
                  var tagTable = document.getElementById('tagTable');

                  // check for duplicate record
                  if (!tagMember(tagTable, result.tagID, result.tagItemID))
                  {
                    // append the row to existing table
                    tagTable.appendChild(createTagInstance(result));
                    window.scrollBy(0, 50);   // auto scroll down
                    // clear input box
                    document.getElementById('newTag').value = '';
                  }
                  else
                    alert('Each interest may be listed one time only. \n'
                          +'You are already a member of interest tag \n\"'
                          +decode64(result.tagText)+'\"');
                }
                else if (result.tagID == -2)
                  messages.innerHTML = 'The tag was not created. Interest tags are limited to 50 per user.';
                else if (result.tagID == -3)
                  messages.innerHTML = 'Each individual word must be less than 30 letters.';
                else if (result.tagID == -4)
                  messages.innerHTML = 'You are already a member of interest tag \n\"'
                          +decode64(result.tagText)+'\".';

                // alternate table row class
                var rows = tagTable.getElementsByTagName('tr');
                var l = 1;

                for (k = 0; k < rows.length; k++)
                {
                  if (rows[k].id.match(/^[0-9]*:[0-9]*$/))
                  {
                    l++;

                    if ((l % 2) == 0)
                      rows[k].className = 'alternating1';
                    else
                      rows[k].className = 'alternating2';
                  }
                }
                break;
              case 'delete':
                if (result.bool)
                {
                  var tagTable = document.getElementById('tagTable');
                  var rows = tagTable.getElementsByTagName('tr');

                  for (k = 0; k < rows.length; k++)
                  {
                    if (rows[k].id == tagID+':'+tagItemID)
                    {
                      try
                      {
                        tagTable.removeChild(rows[k]);
                      }
                      catch (e)
                      {
                        tagTable.deleteRow(rows[k].rowIndex);
                      }
                    }
                  }
                }

                // alternate table row class - based on number of total rows
                var rows = tagTable.getElementsByTagName('tr');
                var l = 1;
                for (k = 0; k < rows.length; k++)
                {
                  if (rows[k].id.match(/^[0-9]*:[0-9]*$/))
                  {
                    l++;
                    if (l % 2 == 0)
                      rows[k].className = 'alternating1';
                    else
                      rows[k].className = 'alternating2';
                  }
                }
                break;
              case 'edit':
                document.getElementById('messages_'+tagID+':'+tagItemID).innerHTML = '&nbsp;';
                if (result.tagID > -1)
                {
                  // references to all the necessary elements
                  var node = createTagInstance(result);
                  var tagTable = document.getElementById('tagTable');
                  var rows = tagTable.getElementsByTagName('tr');

                  for (k = 0; k < rows.length; k++)
                  {
                    if (rows[k].id == tagID+':'+tagItemID)
                    {
                      try
                      {
                        rows[k].parentNode.replaceChild(node, rows[k]);
                      }
                      catch (e)
                      {
                        // replace node
                        rows[k].parentNode.removeChild(rows[k]);
                        rows[k].parentNode.appendChild(node);
                      }
                    }
                  }

                  // alternate table row class
                  var l = 1;
                  for (k = 0; k < rows.length; k++)
                  {
                    if (rows[k].id.match(/^[0-9]*:[0-9]*$/))
                    {
                      l++;

                      if ((l % 2) == 0)
                        rows[k].className = 'alternating1';
                      else
                        rows[k].className = 'alternating2';
                    }
                  }
                }
                else
                {
                  if (result.tagID == -3)
                    document.getElementById('messages_'+tagID+':'+tagItemID).innerHTML =
                      'Each individual word must be less than 30 letters.';

                  if (result.tagID == -4)
                    document.getElementById('messages_'+tagID+':'+tagItemID).innerHTML =
                        'You are already a member of interest tag \n\"'+decode64(result.tagText)+'\"';

                  // reset tag on failed database update
                  document.getElementById('edit_'+tagID+':'+tagItemID).value =
                    document.getElementById('anchor_'+tagID+':'+tagItemID).innerHTML.replace(/^\s*|\s*$/g, '');
                }

                document.getElementById('display_'+tagID+':'+tagItemID).style.display = 'none';

                if (IE_test)
                  document.getElementById('tag_'+tagID+':'+tagItemID).style.display = 'inline';
                else
                  document.getElementById('tag_'+tagID+':'+tagItemID).style.display = 'table-row';
                break;

              default:
                break;
            }
          }
        }
      }
      catch (e)
      {
      }
    }

    // reset the hidden input values
    document.getElementById('request').value = '';
    document.getElementById('newTag').value = '';
    document.getElementById('tagID').value = '';
    document.getElementById('tagItemID').value = '';

    // Ajax was used so don't submit the form
    return false;
  }
  // Ajax was not used so submit the form
  return true;
}

function checkState(http_request)
    {
      try
      {
        if (http_request.readyState == 4)
        {
          // 200 => OK response
          if (http_request.status == 200)
          {
            // evaluate the response
            eval("var result = ("+http_request.responseText+")");

            switch (request)
            {
              case 'create':
                if (result.tagID > -1)
                {
                  var tagTable = document.getElementById('tagTable');

                  // check for duplicate record
                  if (!tagMember(tagTable, result.tagID, result.tagItemID))
                  {
                    // append the row to existing table
                    tagTable.appendChild(createTagInstance(result));
                    window.scrollBy(0, 50);   // auto scroll down
                    // clear input box
                    document.getElementById('newTag').value = '';
                  }
                  else
                    alert('Each interest may be listed one time only. \n'
                          +'You are already a member of interest tag \n\"'
                          +decode64(result.tagText)+'\"');
                }
                else if (result.tagID == -2)
                  messages.innerHTML = 'The tag was not created. Interest tags are limited to 50 per user.';
                else if (result.tagID == -3)
                  messages.innerHTML = 'Each individual word must be less than 30 letters.';
                else if (result.tagID == -4)
                  messages.innerHTML = 'You are already a member of interest tag \n\"'
                          +decode64(result.tagText)+'\"';

                // alternate table row class
                var rows = tagTable.getElementsByTagName('tr');
                var l = 1;

                for (k = 0; k < rows.length; k++)
                {
                  if (rows[k].id.match(/^[0-9]*:[0-9]*$/))
                  {
                    l++;

                    if ((l % 2) == 0)
                      rows[k].className = 'alternating1';
                    else
                      rows[k].className = 'alternating2';
                  }
                }
                break;
              case 'delete':
                if (result.bool)
                {
                  var tagTable = document.getElementById('tagTable');
                  var rows = tagTable.getElementsByTagName('tr');

                  for (k = 0; k < rows.length; k++)
                  {
                    if (rows[k].id == tagID+':'+tagItemID)
                    {
                      try
                      {
                        tagTable.removeChild(rows[k]);
                      }
                      catch (e)
                      {
                        tagTable.deleteRow(rows[k].rowIndex);
                      }
                    }
                  }
                }

                // alternate table row class - based on number of total rows
                var rows = tagTable.getElementsByTagName('tr');
                var l = 1;
                for (k = 0; k < rows.length; k++)
                {
                  if (rows[k].id.match(/^[0-9]*:[0-9]*$/))
                  {
                    l++;
                    if (l % 2 == 0)
                      rows[k].className = 'alternating1';
                    else
                      rows[k].className = 'alternating2';
                  }
                }
                break;
              case 'edit':
                document.getElementById('messages_'+tagID+':'+tagItemID).innerHTML = '&nbsp;';
                if (result.tagID > -1)
                {
                  // references to all the necessary elements
                  var node = createTagInstance(result);
                  var tagTable = document.getElementById('tagTable');
                  var rows = tagTable.getElementsByTagName('tr');

                  for (k = 0; k < rows.length; k++)
                  {
                    if (rows[k].id == tagID+':'+tagItemID)
                    {
                      try
                      {
                        rows[k].parentNode.replaceChild(node, rows[k]);
                      }
                      catch (e)
                      {
                        // replace node
                        rows[k].parentNode.removeChild(rows[k]);
                        rows[k].parentNode.appendChild(node);
                      }
                    }
                  }

                  // alternate table row class
                  var l = 1;
                  for (k = 0; k < rows.length; k++)
                  {
                    if (rows[k].id.match(/^[0-9]*:[0-9]*$/))
                    {
                      l++;

                      if ((l % 2) == 0)
                        rows[k].className = 'alternating1';
                      else
                        rows[k].className = 'alternating2';
                    }
                  }
                }
                else
                {
                  if (result.tagID == -3)
                    document.getElementById('messages_'+tagID+':'+tagItemID).innerHTML =
                      'Each individual word must be less than 30 letters.';

                  if (result.tagID == -4)
                    document.getElementById('messages_'+tagID+':'+tagItemID).innerHTML =
                        'You are already a member of interest tag \n\"'+decode64(result.tagText)+'\"';

                  // reset tag on failed database update
                  document.getElementById('edit_'+tagID+':'+tagItemID).value =
                    document.getElementById('anchor_'+tagID+':'+tagItemID).innerHTML.replace(/^\s*|\s*$/g, '');
                }

                document.getElementById('display_'+tagID+':'+tagItemID).style.display = 'none';

                if (IE_test)
                  document.getElementById('tag_'+tagID+':'+tagItemID).style.display = 'inline';
                else
                  document.getElementById('tag_'+tagID+':'+tagItemID).style.display = 'table-row';
                break;

              default:
                break;
            }
          }
        }
      }
      catch (e)
      {
      }
    }
function createTagInstance(result)
{
   // outer tr
  var outerTr = document.createElement('tr');
  outerTr.setAttribute('id', result.tagID+':'+result.tagItemID);

  // outer td
  var outerTd = document.createElement('td');
  outerTd.setAttribute('valign', 'top');

  // IE use style.setAttribute instead of setAttribute for style
  if (IE_test)
    outerTd.style.setAttribute('cssText', 'border-bottom:0px solid;');
  else
    outerTd.setAttribute('style', 'border-bottom:0px solid;');

  // inner table
  var innerTable = document.createElement('table');
  innerTable.setAttribute('id', 'table_'+result.tagID);
  innerTable.setAttribute('width', '500');
  innerTable.setAttribute('border', '0');

  // IE use style.setAttribute instead of setAttribute for style
  if (IE_test)
    innerTable.style.setAttribute('cssText', 'margin:0px; padding:4px; border-spacing:0px;');
  else
    innerTable.setAttribute('style', 'margin:0px; padding:4px; border-spacing:0px;');

  // inner tbody
  var innerTableBody = document.createElement('tbody');

  // inner tr one
  var tr_one = document.createElement('tr');
  tr_one.setAttribute('id', 'tag_'+result.tagID+':'+result.tagItemID);

  // inner tr one td one
  var tr_one_td_one = document.createElement('td');
  tr_one_td_one.setAttribute('colspan', '2');

  // IE use style.setAttribute instead of setAttribute for style
  if (IE_test)
    tr_one_td_one.style.setAttribute('cssText', 'line-height:18pt;');
  else
    tr_one_td_one.setAttribute('style', 'line-height:18pt;');

  // tagText anchor
  var tagTextAnchor = document.createElement('a');
  tagTextAnchor.setAttribute('id', 'anchor_'+result.tagID+':'+result.tagItemID);
  tagTextAnchor.setAttribute('href', '../view/tag.php?request=browse&tagID='+result.tagID);

  // IE use style.setAttribute instead of setAttribute for style
  if (IE_test)
    tagTextAnchor.setAttribute('className', 'small_interest');
  else
    tagTextAnchor.setAttribute('class', 'small_interest');

  tagTextAnchor.innerHTML = decode64(result.tagText);

  // edit anchor
  var editAnchor = document.createElement('a');
  editAnchor.setAttribute('href', 'javaScript:void(0);');

  // IE use style.setAttribute instead of setAttribute for style
  if (IE_test)
    editAnchor.style.setAttribute('cssText', 'color:#777; margin-left:6px; margin-right:6px;');
  else
    editAnchor.setAttribute('style', 'color:#777; margin-left:6px; margin-right:6px;');

  editAnchor.onmousedown = function()
                           {
                             this.blur();
                             return editTag(result.tagID, result.tagItemID);
                           }
  editAnchor.innerHTML = '[Edit]';

  // inner tr two
  var tr_two = document.createElement('tr');
  tr_two.setAttribute('id', 'display_'+result.tagID+':'+result.tagItemID);

  // IE use style.setAttribute instead of setAttribute for style
  if (IE_test)
    tr_two.style.setAttribute('cssText', 'display:none');
  else
    tr_two.setAttribute('style', 'display:none');

  // inner tr two td one
  var tr_two_td_one = document.createElement('td');
  tr_two_td_one.setAttribute('style', 'line-height:18pt;');
  tr_two_td_one.setAttribute('style', 'padding-top:5px;');
  tr_two_td_one.setAttribute('style', 'padding-bottom:10px;');
  tr_two_td_one.setAttribute('colspan', '2');
  tr_two_td_one.vAlign = "middle";

  // input text box for editing the tag
  var editInput = document.createElement('input');
  editInput.setAttribute('id', 'edit_'+result.tagID+':'+result.tagItemID);
  editInput.setAttribute('name', 'edit_'+result.tagID+':'+result.tagItemID);
  editInput.setAttribute('type', 'text');
  editInput.setAttribute('maxlength', '60');
  editInput.setAttribute('size', '50');
  editInput.style.marginRight = "6px";
  editInput.setAttribute('value', decode64(result.tagText));

  var editSubmit = document.createElement('a');
  editSubmit.className = "button"
  editSubmit.href = 'javascript:document.tagForm.submit();';
  editSubmit.innerHTML = 'Save';

  editSubmit.onmousedown = function()
                           {
                             if (document.getElementById('anchor_'+result.tagID+':'+result.tagItemID).innerHTML==
                                 document.getElementById('edit_'+result.tagID+':'+result.tagItemID).value)
                             {
                               return editCancel(result.tagID, result.tagItemID);
                             }
                             else
                             {
                               document.getElementById('request').value = 'edit';
                               document.getElementById('tagID').value = result.tagID;
                               document.getElementById('tagItemID').value = result.tagItemID;
                               return process(true);
                             }
                           }

  // cancel anchor
  var cancelAnchor = document.createElement('a');
  cancelAnchor.setAttribute('href', 'javaScript:void(0);');

  // IE use style.setAttribute instead of setAttribute for style
  if (IE_test)
    cancelAnchor.style.setAttribute('cssText', 'margin-left:6px;');
  else
    cancelAnchor.setAttribute('style', 'margin-left:6px;');
  cancelAnchor.className = 'button';
  cancelAnchor.onmousedown = function()
                             {
                               this.blur();
                               return editCancel(result.tagID, result.tagItemID);
                             }
  cancelAnchor.innerHTML = 'Cancel';

  // inner tr three
  var tr_three = document.createElement('tr');

  // inner tr three td one
  var tr_three_td_one = document.createElement('td');
  tr_three_td_one.setAttribute('align', 'left');
  tr_three_td_one.setAttribute('class', 'greyPrint');

  // IE use style.setAttribute instead of setAttribute for style
  if (IE_test)
    tr_three_td_one.style.setAttribute('cssText', 'width:260px;');
  else
    tr_three_td_one.setAttribute('style', 'width:260px;');

  tr_three_td_one.innerHTML = result.peeps;
  tr_three_td_one.innerHTML += (result.peeps == 1) ? ' Person' : ' People';
  tr_three_td_one.innerHTML += '&nbsp;|&nbsp;'+result.entries;
  tr_three_td_one.innerHTML += (result.entries == 1) ? ' Entry' : ' Entries';

  // if (result.countNewEntry > 0)
  // {
    // tr_three_td_one.innerHTML += ',&nbsp;<span style="color:#d00;">'+result.countNewEntry+'</span>';
    // tr_three_td_one.innerHTML += (result.countNewEntry == 1) ? '<span style="color:#d00;"> new Entry</span>' : '<span style="color:#d00;"> new Entries</span>';
  // }

  // inner tr three td two
  var tr_three_td_two = document.createElement('td');
  tr_three_td_two.setAttribute('class', 'redBigBold');
  tr_three_td_two.setAttribute('id', 'messages_'+result.tagID+':'+result.tagItemID);

  // spacer td
  var spacerTd = document.createElement('td');
  spacerTd.setAttribute('align', 'left');
  spacerTd.innerHTML += result.lastModified+'&nbsp;minute ago';

  // IE use style.setAttribute instead of setAttribute for style
  if (IE_test)
    spacerTd.style.setAttribute('cssText', 'border-bottom:0px solid;');
  else
    spacerTd.setAttribute('style', 'border-bottom:0px solid;');

  // td
  var cellDelete = document.createElement('td');
  cellDelete.setAttribute('width', '40px');
  cellDelete.setAttribute('align', 'center');
  cellDelete.setAttribute('valign', 'middle');

  // input
  var inputDelete = document.createElement('input');
  inputDelete.setAttribute('type', 'image');
  inputDelete.setAttribute('src', '../images/icons/wrong.gif');
  inputDelete.setAttribute('alt', 'delete');
  inputDelete.setAttribute('title', 'delete');

  inputDelete.onmousedown = function()
                            {
                              this.blur();
                              document.getElementById('request').value = 'delete';
                              document.getElementById('tagID').value = result.tagID;
                              document.getElementById('tagItemID').value = result.tagItemID;
                              return process(true);
                            }

  // connect row one
  tr_one_td_one.appendChild(tagTextAnchor);
  tr_one_td_one.appendChild(editAnchor);
  tr_one.appendChild(tr_one_td_one);
  innerTableBody.appendChild(tr_one);

  // connect row two
  tr_two_td_one.style.paddingBottom = "5px";
  tr_two_td_one.appendChild(editInput);
  tr_two_td_one.appendChild(editSubmit);
  if (!IE_test)
    tr_two_td_one.appendChild(document.createTextNode('  '));
  tr_two_td_one.appendChild(cancelAnchor);
  tr_two.appendChild(tr_two_td_one);
  innerTableBody.appendChild(tr_two);

  // connect row three
  tr_three.appendChild(tr_three_td_one);
  tr_three.appendChild(tr_three_td_two);
  innerTableBody.appendChild(tr_three);

  // connect tbody with its parent table
  innerTable.appendChild(innerTableBody);

  // connect outer row
  outerTd.appendChild(innerTable);
  outerTr.appendChild(outerTd);
  outerTr.appendChild(spacerTd);
  cellDelete.appendChild(inputDelete);
  outerTr.appendChild(cellDelete);

  return outerTr;
}

function editTag(tagID, tagItemID)
{
  clearMessages();
  document.getElementById('messages_' +tagID+':'+tagItemID).innerHTML = '&nbsp';
  document.getElementById('tag_'+tagID+':'+tagItemID).style.display = 'none';

  if (IE_test)
    document.getElementById('display_'+tagID+':'+tagItemID).style.display = 'inline';
  else
    document.getElementById('display_'+tagID+':'+tagItemID).style.display = 'table-row';

  return false;
}

function editCancel(tagID, tagItemID)
{
  document.getElementById('display_'+tagID+':'+tagItemID).style.display = 'none';

  if (IE_test)
    document.getElementById('tag_'+tagID+':'+tagItemID).style.display = 'inline';
  else
    document.getElementById('tag_'+tagID+':'+tagItemID).style.display = 'table-row';

  document.getElementById('edit_'+tagID+':'+tagItemID).value =
    document.getElementById('anchor_'+tagID+':'+tagItemID).innerHTML.replace(/^\s*|\s*$/g, '');

  return false;
}

function validateSubmission(request)
{
  // case: enter key was pressed
  if ((request == null) || (request == '') || (request == undefined))
    return false;

  // invalid cases
  switch (request)
  {
    case 'create':
      // case: create tag empty
      var foo = (document.getElementById('newTag').value).replace(/ /g, '');
      if ((foo == null) || (foo == '') || (foo == undefined))
        return false;

      // case: input string is too short
      if (foo.replace(/[^a-zA-Z0-9]/g, '').length < 2)
      {
        document.getElementById('request').value = '';
        alert('Interest must be at least 2 letters.');
        return false;
      }
      break;

    case 'edit':
      var foo = document.getElementById('edit_'+document.getElementById('tagID').value+':'
                                               +document.getElementById('tagItemID').value).value;
      foo = foo.replace(/[^a-zA-Z0-9]/g, '');

      // case: input string is too short
      if (foo.length < 2)
      {
        document.getElementById('request').value = '';
        alert('Interest must be at least 2 letters.');
        return false;
      }
      break;

    case 'search':
      // case: search box empty
      var foo = (document.getElementById('searchTag').value).replace(/ /g, '');
      if ((foo == null) || (foo == '') || (foo == undefined))
      return false;

      // case: input string is too short
      if (foo.replace(/[^a-zA-Z0-9]/g, '').length < 2)
      {
        document.getElementById('request').value = '';
        alert('Interest must be at least 2 letters.');
        return false;
      }
      break;
    default:
      break;
  }

  // true will submit the form
  return true;
}

function submitTag(event)
{
  if (CR(event))
  {
    document.getElementById('request').value = 'create';
    return process(true);
  }
}

function searchTagCheck(event) // function can't be named searchTag due to conflict of names
{
  if (CR(event))
    document.getElementById('request').value = 'search';
}

function CR(e)
{
  if (window.event) // IE
  {
    if (e.keyCode == 13)
      return true; // true will submit the form
  }

  if (e.which == 13) // Netscape/Firefox/Opera
    return true; // true will submit the form

  return false;
}

function saveEditTag(tagID, tagItemID)
{
  if (document.getElementById('anchor_'+tagID+':'+tagItemID).innerHTML ==
       document.getElementById('edit_'+tagID+':'+tagItemID).value)
  {
    return editCancel(tagID, tagItemID);
  }
  else
  {
    document.getElementById('request').value = 'edit';
    document.getElementById('tagID').value = tagID;
    document.getElementById('tagItemID').value = tagItemID;
    return process(true);
  }
}

function addComment()
{
  document.getElementById('request').value = 'comment';
  document.getElementById('tagForm').action = '../view/postinterestentry.php';
  document.getElementById('tagForm').submit();
}

function deleteComment()
{
  document.getElementById('request').value = 'deleteComment';
  document.getElementById('tagForm').submit();
}

function resetWarning()
{
  document.getElementById('comment_form').className = "alternating1";
  document.getElementById('warning_comment').style.display = "none";
}

function validate_comment()
{
  resetWarning();
  tinyMCE.triggerSave(true, false);
  var err = 0;
  var err_text;
  var err_img =
    "<img src=\"../images/exclamation.gif\"/>";
  if (isEmpty(document.getElementById("commentBody").value))
  {
    document.getElementById('comment_form').className = "error2";
    err_text = err_img + "&nbsp;Please enter a message.";
    err = 1;
  }

  if (err)
  {
    document.getElementById('warning_text_comment').innerHTML = err_text;
    document.getElementById('warning_comment').style.display = "";
    return false;
  }

  document.getElementById('request').value = 'submitComment';
  document.getElementById('tagForm').action = '../system/tagProcess.php';

  return true;
}

function addToMyTags()
{
  document.getElementById('request').value = 'addToMyTags';

  // true will submit the form
  return true;
}

function tagMember(tagTable, tagID, tagItemID)
{
  var rows = tagTable.getElementsByTagName('tr');

  // check for duplicate record
  for (k = 0; k < rows.length; k++)
    if (rows[k].id == tagID+':'+tagItemID)
      return true;

  return false;
}

function createTag(tagText)
{
  document.getElementById('newTag').value = tagText;
  document.getElementById('request').value = 'create';

  // true will submit the form
  return true;
}


/* This code was written by Tyler Akins and has been placed in the
 public domain.  It would be nice if you left this header intact.
 Base64 code from Tyler Akins -- http://rumkin.com
*/
var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";

function encode64(input)
{
  var output = "";
  var chr1, chr2, chr3;
  var enc1, enc2, enc3, enc4;
  var i = 0;

  do
  {
    chr1 = input.charCodeAt(i++);
    chr2 = input.charCodeAt(i++);
    chr3 = input.charCodeAt(i++);

    enc1 = chr1 >> 2;
    enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
    enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
    enc4 = chr3 & 63;

    if (isNaN(chr2))
      enc3 = enc4 = 64;
    else if (isNaN(chr3))
      enc4 = 64;

    output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) +
     keyStr.charAt(enc3) + keyStr.charAt(enc4);
   }
   while (i < input.length);
   return output;
}

function decode64(input)
{
  var output = "";
  var chr1, chr2, chr3;
  var enc1, enc2, enc3, enc4;
  var i = 0;

  // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
  input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

  do
  {
    enc1 = keyStr.indexOf(input.charAt(i++));
    enc2 = keyStr.indexOf(input.charAt(i++));
    enc3 = keyStr.indexOf(input.charAt(i++));
    enc4 = keyStr.indexOf(input.charAt(i++));

    chr1 = (enc1 << 2) | (enc2 >> 4);
    chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
    chr3 = ((enc3 & 3) << 6) | enc4;

    output = output + String.fromCharCode(chr1);

    if (enc3 != 64)
      output = output + String.fromCharCode(chr2);
    if (enc4 != 64)
      output = output + String.fromCharCode(chr3);
  }
  while (i < input.length);

  return output;
}
function clearMessages()
{
  var nodes = document.getElementsByTagName('td');
  for (i = 0; i < nodes.length; i++)
  {
    if (nodes[i].id && nodes[i].id.match('messages_'))
    {

      nodes[i].innerHTML = '';
    }
  }
}

function isEmpty(oldString)
{
  var temp = oldString;
  temp = stripHTML(temp);    // take out HTML tags
  if (temp.length == 0)       // after strip everything and it is empty, then it is empty
    return true;
  return false;
}

function stripHTML(oldString)
{
  if ((oldString.toLowerCase()).indexOf('<img') != -1) // if img is there, then do nothing
    return oldString;

  newString = oldString.replace(/<\S[^><]*>/g, '');    // take out everything within < >
  newString = newString.replace(/&nbsp;/g, '');        // remove all &nbsp;

  return newString.replace(/ /g, '');                  // remove all ' ' whitespace
}