As some you might have experienced, some of the content types in your Drupal site might get too unwieldy because of their sheer size. Displaying a form for the content type of displaying the node is not elegant anymore and the user has to scroll till figures hurt. I had a similar situation recently (attached image with the fields lists all the fields in this 'Event' content type:
The simple and elegant solution is to divide the object into logical tabs both for the form and view. and the final output looked like below for me: 
The way to achieve this is to: 1. Divide the fields in the object into fieldgroups, which will eventually be the different tabs (these are standard groups). 2. Have a custom module where you will override the form and do at least these changes: 2.1 edit form_alter hook to have something like
where eventcontacts is the name of the fieldgroup. So we are creating a new group and removing the fieldgroup from the original form. 2.2. Override the theme hook to have the following: return array( 'myfunc' => array( 'arguments' => array('form' => NULL), ),2.3 In the myfunc function: have the following (refer 2.1 above): $event_keyContacts = drupal_render($form['group_tabs']['group_eventcontacts']); and append the $event_keyContacts variable to the $output. $output .= <div id="event_keycontacts-'.$nid.'">'.$event_keyContacts.'</div> Thats pretty much all for the form. Do this for all the groups(tabs) you want to create . 3. Now for the node viewing part. I created a separate node-event.tpl.php for handling my event content type. This file is created in the theme directory. $content = preg_replace('~<fieldset.+ class="content-multigroup-group-eventcontacts"?</fieldset>~s','',$content); this removes the fieldgroup content from the $content. Do this for all the groups. Now get the contents from $node->content if (isset($node->content['group_eventcontacts'])){ $group_eventcontacts = $node->content['group_eventcontacts']['#children'];Add the $group_eventcontact variable to the tab $tabs_div .= '<div id="event_contacts-'.$nid.'">'.$group_eventcontacts.'</div>';It is important to understand the difference between $content and $node->content. Former is the formatted representation of the content and later is a data structure containing the contents. $node->content has to be themed to become $content. There be sure to manipulate both variables correctly. That is all for getting the tabs. Happy coding