Using BeforeUpload Listener with other properties in FireFox

I have a listener set on the BeforeUpload which will validate the form sent with the upload form. this worked great, if the form wasn't valid it would cancel the uplaod by returning false to BeforeUpload Even.

i tested in IE.7 and FireFox 2.0.0.11 - so far so good.

next i wanted to make sure that the descriptions for the files are not null, so:

i used getUploadFileCount to get the number of files. this worked

i used getUploadFileName to get the name it returns null

i used getUploadFileDescription it returns null

now this is annoying as it is, that there are returning null (any ideas why?) but here's the rub, if i touch getUploadFileName in anyway, it seems to negate the BeforeUpload listener. so even thought that listener returns false, the upload still proceeds.

Two Q's:

1. why are those properties returning null?

2. why is the event listener no longer accepting return value when the filename property is touched?

thanks

Please note that it works fine for IE so the basics have been covered. else it would not work there either.

Thank you

// 1/11/2008:8:43 AM
function Validate_Descriptions(){
 var FilesNeedingDescriptions = new Array()
 var r = "";
 try{
  var ui = getImageUploader("ImageUploader")
 } catch(e){
  return(Validate_HTMLDescriptions())
 }
 try {
  if(ui){
   if(ns){return("");}
    var fileCount = ui.getUploadFileCount();
    var i = 0;
    var ii = 0;
    var arrFileName
    var fileName, fileDesc;
    for(i=1;i<=fileCount;i++){
     fileName = ui.getUploadFileName(i);
     if(fileName!=null){
      arrFileName = fileName.toLowerCase().split("\\");
      fileName = arrFileName[arrFileName.length-1];
     }
     fileDesc = ui.getUploadFileDescription(i);
     FilesNeedingDescriptions[FilesNeedingDescriptions.length] = {
      filename : fileName,
      description: fileDesc,
      index : i
     };
    }
   return(Validate_FileList(FilesNeedingDescriptions));
  }
 } catch(e){return("");}
 return("");
}

Edited by user Tuesday, January 15, 2008 1:46:41 PM(UTC)  | Reason: Not specified