onBlur or onChange not working with browse button through tapestry !!!!

[Ananya Goswami]

Hi All !!
                I have a typical problem using javascript in tapestry.
                I have a browse button in my page and a text field near it.
                According to functionality , it is required to display the
name of the file browsed in the text field immediately after browsing a
file.
                I am using the following piece of code... but am unable to
get the desired effect..
The Script part:

        <script language="Javascript">
                function populateName(filename,id)
                {
                        startindex = filename.lastIndexOf("\\")+1;
                        lastindex = filename.lastIndexOf(".");
                        var name =filename.substring(startindex,lastindex);
                        if(id==1)
                        document.uploadForm.name1.value=name;
                        if(id==2)
                        
                }
        </script>


In the form part:


                <tr>
               <td><input type="file" jwcid="upload1" name="upload1"
onBlur="Javascript:populateName(upload1.value,1)"/></td>
               <td><input type="text" jwcid="name1" /></td>
                 </tr>



Please help !!!!

Thanks & Regards
-----------------------------
Ananya Goswami
Software Developer

-----------------------------
mail: [EMAIL PROTECTED]
mob: 09886886320
ph: 080-57561000
extn:3720