Drupal 7.x

I am trying to run an AJAX callback through the forms API using a hidden field. I have the following code for my hidden field:

<?php
  $form['videowall_video_id'] = array(
      '#type' => 'hidden',
      '#default_value' => '000000',
      '#ajax' => array(
          'callback' => 'videowall_respond_form_callback',
          'wrapper' => 'form_wrapper',
      ),
  );
?>

When a button is clicked, I use jQuery to change the value of that hidden field. Here is the jQuery I use:

I'm attempting to create a footer menu on my new site and I can't figure out what code I should embed in my template to do so.

It's easy enough to create it in the admin, I'm just not sure which hook or block I should be using to put it into my template. (and what that code might look like)

I have 10+ years working with php so I'm not a novice to programming however,I'm just starting to learn drupal.

thanks guys

I've been looking around online for the last hour to get some kind of explanation for what the following means:

print theme('links__system_main_menu', $variables);

I understand that theme() fulfills a lot of roles in the theme system and I know that 'links' refers to the theme_links() function inside /includes/theme.inc what I don't understand is '__system_main_menu'?, what files does this refer to? Why are there two '__'?

I don't where to start unraveling this mess... http://www.standingbearstudios.com/blog/

Can anyone spare some pity and give me a starting point? I fully realize that my inexperience with Drupal brought me to where I am at the moment.

It's kind of a bummer because the site has a wee bit of rank on Google for at least one or two phrases.

thank you

Hello everyone.
I am new to Drupal. I think i did install this app once on my computer long time ago , however, i need to start a project so I thought Drupal would be great way to go .

I need to create a site where users can upload their images , Post information about themselves and other attribute about what they do , etc.
I was wondering if there is any module for drupal that can do this .
thanks.

I would like to set up a site so when a user logs in they're taken to one of several homepages. I'm setting up a car site. I would like when a dealer logs in, they're taken to a dealer homepage. When an private buyer comes in they're taken to a different homepage.

I've noticed several different modules - organic groups, simple access, content access just wondering which would be the best one and the easiest to set up and administer.