[FCK] undefined error

Hi,

I'm not sure am I allowed to post this topic here, but here's my problem...

Let's make this simple, I am totally newbie in coding.

I installed a lightbox patch to FCKeditor, and I tried to modify it a bit so I could add a title into it. I kind of managed but...

Here's the html code which I added to the html file:

               <div>
                 <br />
                 <input id="txtTitleLightBox" style="width: 100%" type="text" />
               </div>

And these are the modified codes which I added to the js file:

     var rel = oLink.rel;
     if (rel)
     {
       var type;
       if (rel.indexOf("[") > 0)
         type = rel.substring(0,rel.indexOf("["));
       else
         type = rel;
       var oE = GetE('rad'+type);
       if (oE)
       {
         GetE('txtTitleLightBox').value= title;
         GetE('txtGroupLightBox').value= rel.substring(rel.indexOf("[")+1, rel.indexOf("]"));
         GetE('chkLightBox').checked = true;
         GetE('rad'+type).checked = true;
       }
     }

   if (GetE('chkLightBox').checked && oLink)
   {
     var rel = "lightbox"
     var rad = document.getElementsByName('radLightBoxType')
     for (var i=0; i < rad.length; i++)
     {
       if (rad[i].checked)
       {
         rel = rad[i].value;
         break;
       }
     }

     oLink.title = title
     var title = GetE('txtTitleLightBox').value = title;
     oLink.rel = rel
     var group = GetE('txtGroupLightBox').value
     if (group)
     {
       oLink.rel += "[" + group + "]"
     }
   }

And what I added as new code were

     oLink.title = title
     var title = GetE('txtTitleLightBox').value = title;

and

         GetE('txtTitleLightBox').value= title;

The result is (eg) this kind of html text:

<a title="undefined" rel="lightbox" href="image/path"><img width="200" height="113" alt="" src="image/path" /></a>

So the title is undefined even if I fill something to the txtTitleJavaScript box...

If you want to investigate the full files, they are here:

http://jump.fm/IYOXH

.. thanks :s

btw, is this a custom forum or somewhere available to download? This looks awesome!