Search Blogger within Team Blogger

http://awesomescreenshot.com/0be26jvwc0

$filter[] = JHTML::_('select.option', 'alphabet', JText::_('Sort by Alphabetical') );

		$filter[] = JHTML::_('select.option', 'photographers', JText::_('Sort by Photographers') );

		$filter[] = JHTML::_('select.option', 'writers', JText::_('Sort by Writers') );

		$filter[] = JHTML::_('select.option', 'featured', JText::_('COM_EASYBLOG_SORT_BY_FEATURED_BLOGGERS') );

		$filter[] = JHTML::_('select.option', 'latestpost', JText::_('COM_EASYBLOG_SORT_BY_LATEST_POST') );

		$filter[] = JHTML::_('select.option', 'latest', JText::_('COM_EASYBLOG_SORT_BY_LATEST_BLOGGER') );

Can I know the event code location for alphabet/featured/latestpost/latest when I hit "Filter" button?
(please let me know if you need more description

and

I want to know how to get Names Underneath Team Bloggers Avatar