In my page.tpl.php I have 2 different sections nl. $page['section_orange'] and $page['section_contact'].

What I want is for my block.tpl.php to print my heading in < h2 > when a block is listed in the $page['section_orange'] section and in < h4 > in the $page['section_contact'] section.

How can I achieve this from within my block.tpl.php template.
Or do I need to create a hook within my template.php?