It is resolved. I referred http://drupal.org/node/399676 Instead of using "drupal_json(array('status' => TRUE, 'data' => $output));" , need to use " print drupal_to_js ( array ( 'status' => TRUE, 'data' => $output ) ); exit ". Thanks Austin On Fri, Apr 1, 2011 at 5:17 AM, Austin Einter <austin.einter@gmail.com>wrote:

Hi All I am using Drupal 6.20.

In a form I have a file field as below.

* $form['work']['resume'] = array( '#type' => 'file', '#title' => "Upload Resume", '#description' => 'Browse and select your resume.', '#required' => FALSE, '#size' => 50, );*

I have a AHAH button in (in a different division)

* $form['skill_set_wrapper']['allskills']['moreskill'] = array( '#type' => 'button', '#value' => t('Add / Remove Domain, Skills'), '#weight' => 1, '#ahah' => array( 'path' => 'resume_submit/form/moreskills', 'wrapper' => 'all-skills', 'method' => 'replace', ), );*

In addition to that I have number of fields in my form. If I *do not* browse and slect a file for "file" field, then AHAH button works fine (I can add multiple rows for skill add). If I browse and slect a file for "file" field, then on clicking AHAH button, I get a File download dialog asking "Do you want to save this file or find a program online to open it".

Did anybody face this issue previouly. What is the workout to avaoid the file download dialog.

Regards Austin