Thanks a lot RvR, i tested works fine but I wish if I could put html text in tab1.php file.

But tab1.php file does not support html content :(

Try to improve it more, so that it can support html text as well and if u can make all tabs ajax Wow that would be simply superb.

@kisssssss4ever All tab#.php support ANY PHP/HTML/Text codes: just delete all in there and then add your own html code.

Can comment this pages?

Nope. But you can to extend it

Is there a way to remove the Page link from the sidebar on the right? I've tried tinkering with it but it makes my site un-accessible when I do, so I'm guessing I'm doing the wrong thing. Lol

@Dylan Pruitt Just delete this string

Line 35           'sidebar' => elgg_view('customtabs/sidebar'),

In mod\customtabs\index.php

Thanks a lot. Sorry, that was a stupid question. 

I deleted it, but the page title is still on the sidebar site-wide. 

@Dylan Pruitt Wrong answer, my apologies :( It's not a sidebar view but the page menu item

You need delete lines from 21 to 32 in start.php:

if(!elgg_in_context('admin')){
elgg_register_menu_item('page', array(
            'section' => 'customtabs',
            'name' => 'customtabs',
            'text' => elgg_echo('customtabs'),
            'title' => elgg_echo('customtabs'),
            'href' => "/customtabs",
        //    'contexts' => array('activity'),
            'link_class' =>     'elgg-state-selected',
            'priority' => 100,
            ));                
    }

Thank you very much!