function quote(commentId, authorId, authorName)
{
   var tagOpenQuote    = "<blockquote id='cite'>";
   var tagOpenCite     = "<cite>";
   var tagCloseQuote   = "</blockquote>";
   var tagCloseCite    = "</cite>";

   var selText = getSel();

   var commentField = document.getElementById("CommentBox");

   var commentText = "";

   commentText = dumpCodeTree(document.getElementById("CommentBody_" + commentId));

   if(selText != "")
      commentText = selText;

   if(commentField.value != "")
      commentField.value += "\r\n" + "\r\n";

   commentField.value += tagOpenQuote;
   /* von BSB am 07.02.09 um + ":<br />" erweitert und Cite für Text*/
   commentField.value += authorName+":<br />";
   commentField.value += tagOpenCite;
   commentField.value += commentText;
   commentField.value += tagCloseCite;
   commentField.value += tagCloseQuote;

   commentField.focus();
}

function getSel()
{
   if(window.getSelection)
   {
      var d = document.createElement("p");
      var s = window.getSelection();

      for(var i = 0; i < s.rangeCount; ++i)
      {
         var r = s.getRangeAt(i);
         if (!r.collapsed)
         {
            d.appendChild(r.cloneContents());
         }
      }
      return dumpCodeTree(d);
   }
   else
      return "";
}

function dumpCodeTree(root)
{
   var children     = root.childNodes;
   var outputText   = "";

   //BBCode should use square brackets:

   var tagOpenPrefix  = "<";
   var tagOpenSuffix  = ">";
   var tagClosePrefix = "</";
   var tagCloseSuffix = ">";

   for (var i = 0; i < children.length; i++)
   {
      if(children[i].nodeType == 1)
      {
         var tagName = children[i].tagName.toLowerCase();

         //If html tags need to be changed into something else,
         //here is the place to do it:

         if(tagName == "br")
         {
            outputText += "\r\n";
            tagName = "";
         }

         if(tagName != "")
         {
            outputText += tagOpenPrefix;
            outputText += tagName;

            for (var j = 0; j < children[i].attributes.length; j++)
            {
               attributeName  = children[i].attributes[j].name;
               attributeValue = children[i].attributes[j].value;

               //If html attributes need to be changed into something else,
               //here is the place to do it:

               if(attributeName == "target"          ||
                  attributeName == "hideFocus"       ||
                  attributeName == "contentEditable" ||
                  attributeName == "disabled"        ||
                  attributeName == "tabIndex")
                  {attributeName = "";}

               if(attributeName != "" && attributeValue != "null" && attributeValue != "")
               {
                  outputText += " ";
                  outputText += attributeName;
                  outputText += "=\"";
                  outputText += attributeValue;
                  outputText += "\"";
               }
            }

            outputText += tagOpenSuffix;
            outputText += dumpCodeTree(children[i]);
            outputText += tagClosePrefix;
            outputText += tagName;
            outputText += tagCloseSuffix;
         }
      }
      else if(children[i].nodeType == 3)
      {
         var nodeValue = children[i].nodeValue;

         //strip out extra newlines/returns
         nodeValue = nodeValue.replace(/\r\n/g," ");
         nodeValue = nodeValue.replace(/\n/g," ");
         nodeValue = nodeValue.replace(/\r/g," ");

         //strip whitespace
         nodeValue = nodeValue.replace(/^\s*|\s*$/g,'');

         outputText += nodeValue;
      }
   }

   return outputText;
}